Quotation Archive




This is a collection of some of my favorite quotations and proverbs.


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It is a capital mistake to theorize before one has data. -Sir Arthur Conan Doyle
No human investigation can be called real science if it cannot be demonstrated mathematically. -Leonardo da Vinci
Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away. -Antoine de Saint Exupéry
My work is a game, a very serious game. -M. C. Escher
The sciences do not try to explain, they hardly even try to interpret, they mainly make models. By a model is meant a mathematical construct which, with the addition of certain verbal interpretations, describes observed phenomena. The justification of such a mathematical construct is solely and precisely that it is expected to work. -John von Neumann
Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude. -Thomas Jefferson
The simplest of schoolboy is now aware of truths for which Archimedes would have given his life. -Ernest Renan, 1883
Trifles make perfection, and perfection is no trifle. -Michelangelo
No great discovery was ever made without a bold guess. -Sir Isaac Newton
Though science can cause problems, it is not by ignorance that we will solve them. -Isaac Asimov
No man ever steps in the same river twice, for it's not the same river and he's not the same man. -Heraclitus
One can measure the importance of a scientific work by the number of earlier publications rendered superfluous by it. -David Hilbert
This isn't right. This isn't even wrong. -Wolfgang Pauli (on a paper submitted by a physicist colleague)
It is the mark of an educated mind to rest satisfied with the degree of precision which the nature of the subject admits and not to seek exactness where only an approximation is possible. -Aristotle
... that, in a few years, all great physical constants will have been approximately estimated, and that the only occupation which will be left to men of science will be to carry these measurements to another place of decimals. -James Clerk Maxwell (Scientific Papers 2, 244, October 1871.)
Ask her to wait a moment—I am almost done. -Carl Friedrich Gauss (while working, when informed that his wife is dying)
Results! Why man, I have gotten a lot of results. I know several thousand things that won't work. -Thomas Alva Edison
The art of drawing conclusions from experiments and observations consists in evaluating probabilities and in estimating whether they are sufficiently great or numerous enough to constitute proofs. This kind of calculation is more complicated and more difficult than it is commonly thought to be . . . -Antoine Lavoisier
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them. -Sir William Bragg
Blaise Pascal used to mark with charcoal the walls of his playroom, seeking a means of making a circle perfectly round and a triangle whose sides and angle were all equal. He discovered these things for himself and then began to seek the relationship which existed between them. He did not know any mathematical terms and so he made up his own. Using these names he made axioms and finally developed perfect demonstrations, until he had come to the thirty-second proposition of Euclid. -C. M. Cox
Measure what is measurable, and make measurable what is not so. -Galileo Galilei
There's nothing remarkable about it. All one has to do is hit the right keys at the right time and the instrument plays itself. -Johann Sebastian Bach
I find television very educating. Every time somebody turns on the set I go into the other room and read a book. -Groucho Marx
When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong. -Richard Buckminster Fuller
Even the lion has to defend himself against flies. -German Proverb
Nature uses as little as possible of anything. -Johannes Kepler
Never express yourself more clearly than you think. -Niels Bohr
May every young scientist remember... and not fail to keep his eyes open for the possibility that an irritating failure of his apparatus to give consistent results may once or twice in a lifetime conceal an important discovery. -Patrick Blackett
The reader will find no figures in this work. The methods which I set forth do not require either constructions or geometrical or mechanical reasonings: but only algebraic operations, subject to a regular and uniform rule of procedure. -Joseph-Louis LaGrange
Do you not think it a matter worthy of lamentation that when there is such a vast multitude of them [worlds], we have not yet conquered one? -Alexander the Great
To the devil with those who published before us. -Aelius Donatus (4 A.D.)
You will be able to appreciate the influence of such an Engine on the future progress of science. I live in a country which is incapable of estimating it. -Charles Babbage (on computing machines)
Everything that can be invented has been invented. -Charles H. Duell (Commissioner, U.S. Office of Patents, 1899)
There is nothing so stupid as an educated man, if you get off the thing he was educated in. -Will Rogers
[about Fourier] It was, no doubt, partially because of his very disregard for rigor that he was able to take conceptual steps which were inherently impossible to men of more critical genius. -Rudoph E. Langer
I didn't think; I experimented. -Wilhelm Roentgen
[about Archimedes:]... being perpetually charmed by his familiar siren, that is, by his geometry, he neglected to eat and drink and took no care of his person; that he was often carried by force to the baths, and when there he would trace geometrical figures in the ashes of the fire, and with his finger draws lines upon his body when it was anointed with oil, being in a state of great ecstasy and divinely possessed by his science. -Plutarch
It isn't that they can't see the solution. It is that they can't see the problem. -G. K. Chesterton
Within the problem lies the solution. -Milton Katselas
I found your essay to be good and original. However, the part that was original was not good and the part that was good was not original. -Samuel Johnson
Science is built up with facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house. -Jules Henri Poincaré
I recognize that many physicists are smarter than I am—most of them theoretical physicists. A lot of smart people have gone into theoretical physics, therefore the field is extremely competitive. I console myself with the thought that although they may be smarter and may be deeper thinkers than I am, I have broader interests than they have. -Linus Pauling
One of the principal objects of theoretical research in my department of knowledge is to find the point of view from which the subject appears in its greatest simplicity. -Josiah Willard Gibbs
This 'telephone' has too many shortcomings to be seriously considered as a means of communication. The device is inherently of no value to us. -Anonymous, Western Union internal memo, 1876
If the only tool you have is a hammer, you tend to see every problem as a nail. -Abraham Maslow
Vigorous writing is concise. -William Strunk
There are no such things as applied sciences, only applications of science. -Louis Pasteur
The greater difficulty, the more glory in surmounting it. Skillful pilots gain their reputation from storms and tempests. -Epicures
[On the concept of mathematical groups:] ... what a wealth, what a grandeur of thought may spring from what slight beginnings. -H. F. Baker
In science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs. -William Osler
If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things. -Rene Descartes
I think there is a world market for maybe five computers. -Thomas Watson (chairman of IBM, 1943)
If I am given a formula, and I am ignorant of its meaning, it cannot teach me anything, but if I already know it what does the formula teach me? -St. Augustine
The latest authors, like the most ancient, strove to subordinate the phenomena of nature to the laws of mathematics. -Isaac Newton
I think that there is a moral to this story, namely that it is more important to have beauty in one's equations that to have them fit experiment. If Schroedinger had been more confident of his work, he could have published it some months earlier, and he could have published a more accurate equation. It seems that if one is working from the point of view of getting beauty in one's equations, and if one has really a sound insight, one is on a sure line of progress. If there is not complete agreement between the results of one's work and experiment, one should not allow oneself to be too discouraged, because the discrepancy may well be due to minor features that are not properly taken into account and that will get cleared up with further development of the theory. -Paul Adrien Maurice Dirac
Science itself, therefore, may be regarded as a minimal problem, consisting of the completest possible presentment of facts with the least possible expenditure of thought. -Ernst Mach
For every problem, there is one solution which is simple, neat and wrong. -Henry Louis Mencken
Hell, there are no rules here—we're trying to accomplish something. -Thomas A. Edison
Whoever, in the pursuit of science, seeks after immediate practical utility, may generally rest assured that he will seek in vain. -H.L.F. von Helmholtz
The best way to have a good idea is to have a lot of ideas. -Linus Pauling
Not everything that counts can be counted, and not everything that can be counted counts. -(Sign hanging in Einstein's office at Princeton)
Computers in the future may weigh no more than 1.5 tons. -Popular Mechanics (forecasting the relentless march of science, 1949)
It is India that gave us the ingenious method of expressing all numbers by means of ten symbols, each symbol receiving a value of position as well as an absolute value; a profound and important idea which appears so simple to us now that we ignore its true merit. But its very simplicity and the great ease which it has lent to computations put our arithmetic in the first rank of useful inventions; and we shall appreciate the grandeur of the achievement the more when we remember that it escaped the genius of Archimedes and Apollonius, two of the greatest men produced by antiquity. -Pierre-Simon de Laplace
If one is master of one thing and understands one thing well, one has at the same time, insight into and understanding of many things. -Van Gogh
All truth passes through 3 stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident. -Arthur Schopenhauer
I recognize the lion by his paw. -Jacques Bernoulli (After reading an anonymous solution to a problem that he realized was Newton's solution)
We don't know a millionth of one percent about anything. -Thomas Alva Edison
The greatest obstacle to discovering the shape of the earth, the continents, and the oceans was not ignorance but the illusion of knowledge. -Daniel Boorstin
You're aware the boy failed my grade school math class, I take it? And not that many years later he's teaching college. Now I ask you: Is that the sorriest indictment of the American educational system you ever heard? No aptitude at all for long division, but never mind. It's him they ask to split the atom. How he talked his way into the Nobel prize is beyond me. -Karl Arbeiter: former teacher of Albert Einstein
God runs electromagnetics by wave theory on Monday, Wednesday, and Friday, and the Devil runs them by quantum theory on Tuesday, Thursday, and Saturday. -Sir William Bragg
The calculus is the greatest aid we have to the application of physical truth in the broadest sense of the word. -W. F. Osgood
In real life, unlike in Shakespeare, the sweetness of the rose depends upon the name it bears. Things are not only what they are. They are, in very important respects, what they seem to be. -Hubert H. Humphrey
[The universe] cannot be read until we have learnt the language and become familiar with the characters in which it is written. It is written in mathematical language, and the letters are triangles, circles and other geometrical figures, without which means it is humanly impossible to comprehend a single word. -Galileo Galilei
All our science, measured against reality, is primitive and childlike—and yet it is the most precious thing we have. -Albert Einstein
In the beginner's mind there are many possibilities, but in the expert's mind there are few. -Shunryu Suzuki
Who the hell wants to hear actors talk? -H. M. Warner (founder of Warner Brothers, in 1927 on talking pictures)
One cannot escape the feeling that these mathematical formulas have an independent existence and an intelligence of their own, that they are wiser that we are, wiser even than their discoverers, that we get more out of them than was originally put into them. -Heinrich Hertz
Nature laughs at the difficulties of integration. -Pierre-Simon de Laplace
Even if you're on the right track you'll get run over if you just sit there. -Will Rogers
Discovery consists in seeing what everyone else has seen and thinking what no one else has thought. -Albert Szent-Gyorgi
The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science. He to whom this emotion is a stranger, who can no longer pause to wonder and stand rapt in awe, is as good as dead: his eyes are closed. -Albert Einstein
I have made this letter longer than usual, because I lack the time to make it short. -Blaise Pascal
If at first you don't succeed, try, try, again. Then quit. There's no use being a damn fool about it. -W. C. Fields
Out of nothing I have created a strange new universe. -János Bolyai (A reference to the creation of a non-euclidean geometry)
Your Highness, I have no need of this hypothesis. -Pierre Laplace, to Napoleon on why his celestial mechanics make no mention of God
The doctor of the future will give no medicine, but will interest his patients in the care of human frame, and in the cause and prevention of disease. -Thomas Edison
If we are still going to have to put up with these damn "quantum jumps", I am sorry that I ever had anything to do with quantum theory. -Erwin Schrödinger (in a conversation with Niels Bohr)
Who, by vigor of mind almost divine, the motions and figures of the planets, the paths of comets, and the tides of the seas first demonstrated. -Isaac Newton [His epitaph]
All exact science is dominated by the idea of approximation. -Bertrand Russell
All truths are easy to understand once they are discovered; the point is to discover them. -Galileo Galilei
In my opinion, the greatest single failure of American education is that students come away unable to distinguish between a symbol and the thing the symbol stands for. -Paul Lutus
The lecturer should give the audience full reason to believe that all his powers have been exerted for their pleasure and instruction. -Michael Faraday
He can compress the most words into the smallest idea of any man I ever met. -Abraham Lincoln
He who understands Archimedes and Apollonius will admire less the achievements of the foremost men of later times. -Gottfried Whilhem Leibniz
Your theory is crazy, but it's not crazy enough to be true. -Niels Bohr (to Wolfgang Pauli)
Anyone who has never made a mistake has never tried anything new. -Albert Einstein
Some men see things as they are and ask why. Others dream things that never were and ask why not. -George Bernard Shaw
Physics isn't a religion. If it were, we'd have a much easier time raising money. -Leon Lederman
Gauss replied, when asked how soon he expected to reach certain mathematical conclusions, that he had them long ago, all he was worrying about was how to reach them! -René J. Dubos
The mathematical facts worthy of being studied are those which, by their analogy with other facts, are capable of leading us to the knowledge of a physical law. They reveal the kinship between other facts, long known, but wrongly believed to be strangers to one another. -Jules Henri Poincaré
There is no shame in not knowing; the shame lies in not finding out. -Russian proverb
Defer no time, delays have dangerous ends. -William Shakespeare
Each problem that I solved became a rule which served afterwards to solve other problems. -Rene Descartes
Talk sense to a fool and he calls you foolish. -Euripides
We don't like their sound, and guitar music is on the way out. -Decca Recording Co. (rejecting the Beatles, 1962)
You can't build a reputation on what you are going to do. -Henry Ford
It is useless for the sheep to pass resolutions in favor of vegetarianism while the wolf remains of a different opinion. -Dean William Inge
Nobody since Newton has been able to use geometrical methods to the same extent for the like purposes; and as we read the Principia we feel as when we are in an ancient armoury where the weapons are of gigantic size; and as we look at them we marvel what manner of man he was who could use as a weapon what we can scarcely lift as a burden. -Whewell
If a cluttered desk signs a cluttered mind, Of what, then, is an empty desk a sign? -Albert Einstein
And on the pedestal these words appear—"My name is Ozymandias, king of kings: Look on my works, ye Mighty, and despair!" Nothing beside remains. Round the decay, Of that colossal wreck, boundless and bare, The lone and level sands stretch far away. -Percy Bysshe Shelley
Better to light a candle than to curse the darkness. -Chinese Proverb
For a physicist mathematics is not just a tool by means of which phenomena can be calculated, it is the main source of concepts and principles by means of which new theories can be created. -Freeman Dyson
Everything you've learned in school as "obvious" becomes less and less obvious as you begin to study the universe. For example, there are no solids in the universe. There's not even a suggestion of a solid. There are no absolute continuums. There are no surfaces. There are no straight lines. -R. Buckminster Fuller
Even the blind squirrel finds a nut occasionally. -Proverb
Obstacles cannot crush me. Every obstacle yields to stern resolve. He who is fixed to a star does not change his mind. -Leonardo DaVinci
One of the symptoms of an approaching nervous breakdown is the belief that one's work is terribly important. -Bertrand Russell
Lord, grant that I may always desire more than I accomplish. -Michelangelo
Wherever [mathematical] groups disclosed themselves, or could be introduced, simplicity crystallized out of comparative chaos. -Eric Temple Bell
I find that a great part of the information I have was acquired by looking up something and finding something else on the way. -Franklin P. Adams
In composing, as a general rule, run your pen through every other word you have written; you have no idea what vigor it will give your style. -Sydney Smith
The mathematician may be compared to a designer of garments, who is utterly oblivious of the creatures whom his garments may fit. To be sure, his art originated in the necessity for clothing such creatures, but this was long ago; to this day a shape will occasionally appear which will fit into the garment as if the garment had been made for it. Then there is no end of surprise and delight. -Dantzig
Do not say a little in many words but a great deal in a few. -Pythagoras
As for everything else, so for a mathematical theory: beauty can be perceived but not explained. -Arthur Cayley
I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. -Galileo Galilei
All great truths begin as blasphemies. -George Bernard Shaw
There is an astonishing imagination, even in the science of mathematics... We repeat, there was far more imagination in the head of Archimedes than in that of Homer. -Voltaire
He who loves practice without theory is like the sailor who boards ship without a rudder and compass and never knows where he may cast. -Leonardo da Vinci
Since the mathematicians have invaded the theory of relativity, I do not understand it myself anymore. -Albert Einstein
"Can you do addition?" the White Queen asked. "What's one and one and one and one and one and one and one and one and one and one?" "I don't know," said Alice. "I lost count." -Lewis Carroll
Nothing is a waste of time if you use the experience wisely. -Rodin
When you want to test the depths of a stream, don't use both feet. -Chinese Proverb
It would appear that we have reached the limits of what it is possible to achieve with computer technology, although one should be careful with such statements, as they tend to sound pretty silly in 5 years. -John Von Neumann, 1949
I choose a block of marble and chop off whatever I don't need. -Francois-Auguste Rodin (when asked how he managed to make his remarkable statues)
How glorious it is - and also how painful - to be an exception. -Alfred de Musset
There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy. -William Shakespeare
Once in Persia reigned a king, who, upon his signet ring, 'graved a maxim true and wise, which, if held before the eyes, gave him counsel at a glance, fit for every change and chance. Solemn words, and these are they: "Even this shall pass away." -Theodore Tilton
And perhaps, posterity will thank me for having shown it that the ancients did not know everything. -Pierre de Fermat
A wisely chosen illustration is almost essential to fasten the truth upon the ordinary mind, and no teacher can afford to neglect this part of his preparation. -Howard Crosby
The life so short, the craft so long to learn. -Hippocrates
Experimentalists think that it is a mathematical theorem while the mathematicians believe it to be an experimental fact. -Gabriel Lippman (in a discussion with Poincaré regarding the Gaussian curve)
Examinations are formidable even to the best prepared, for the greatest fool may ask more than the wisest man can answer. -Charles Caleb Colton
I am acutely aware of the fact that the marriage between mathematics and physics, which was so enormously fruitful in past centuries, has recently ended in divorce. -Freeman Dyson
The concept is interesting and well-formed, but in order to earn better than a 'C', the idea must be feasible. -Yale professor in response to a paper proposing a reliable overnight delivery service written by Fred Smith, founder of Federal Express Corp.
There are many examples of old, incorrect theories that stubbornly persisted, sustained only by the prestige of foolish but well-connected scientists. ... Many of these theories have been killed off only when some decisive experiment exposed their incorrectness. .. Thus the yeoman work in any science, and especially physics, is done by the experimentalist, who must keep the theoreticians honest. -Michio Kaku
The test of a first-rate intelligence is the ability to hold two opposed ideas at the same time, and still retain the ability to function. -F. Scott Fitzgerald
It has always seemed to me extreme presumptuousness on the part of those who want to make human ability the measure of what nature can and knows how to do, since, when one comes down to it, there is not one effect in nature, no matter how small, that even the most speculative minds can fully understand. -Galileo Galilei
Chance favors only the prepared mind. -Louis Pasteur
A new scientific truth does not triumph by convincing its opponents, but rather because its opponents die, and a new generation grows up that is familiar with it. -Max Planck
The palest ink is better than the best memory. -Chinese Proverb
[During a lecture:] This has been done elegantly by Minkowski; but chalk is cheaper than grey matter, and we will do it as it comes. -Albert Einstein
Entities should not be multiplied unnecessarily. -William of Occam (Occam's Razor)
It is not the horse that draws the cart, but the oats. -Russian proverb
The farther the experiment is from theory the closer it is to the Nobel Prize. -Frederic Joliot-Curie
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled. -Richard P. Feynman
In questions of science, the authority of a thousand is not worth that humble reasoning of a single individual. -Galileo Galilei
God does not care about our mathematical difficulties. He integrates empirically. -Albert Einstein
The first rule to tinkering is to save all the parts. -Paul Erlich
Mathematics seems to endow one with something like a new sense. -Charles Darwin
Opportunities multiply as they are seized. -Sun Tzu
As far as the laws of mathematics refer to reality, they are not certain, as far as they are certain, they do not refer to reality. -Albert Einstein
A theory has only the alternative of being right or wrong. A model has a third possibility: it may be right, but irrelevant. -Manfred Eigen
In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before. But in poetry, it's the exact opposite. -Paul Dirac
Our plans miscarry because they have no aim. When a man does not know what harbor he is making for, no wind is the right wind. -Seneca
The only thing that interferes with my learning is my education. -Albert Einstein
If scientific reasoning were limited to the logical processes of arithmetic, we should not get very far in our understanding of the physical world. One might as well attempt to grasp the game of poker entirely by the use of the mathematics of probability. -Vannevar Bush
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man. -George Bernard Shaw
One had to cram all this stuff into one's mind for the examinations, whether one liked it or not. This coercion had such a deterring effect on me that, after I had passed the final examination, I found the consideration of any scientific problems distasteful to me for an entire year. -Albert Einstein
To invent, you need a good imagination and a pile of junk. -Thomas Edison
One of the advantages of being disorderly is that one is constantly making exciting discoveries. -A. A. Milne
The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them. -Sir William Bragg
Reason and free inquiry are the only effectual agents against error. -Thomas Jefferson
If others would but reflect on mathematical truths as deeply and as continuously as I have, they would make my discoveries. -Karl Friedrich Gauss
In the middle of difficulty lies opportunity. -Albert Einstein
Don't tell people how to do things. Tell them what to do and let them surprise you with their results. -George Patton
The Reader may here observe the Force of Numbers, which can be successfully applied, even to those things, which one would imagine are subject to no Rules. There are very few things which we know, which are not capable of being reduc'd to a Mathematical Reasoning; and when they cannot it's a sign our knowledge of them is very small and confus'd; and when a Mathematical Reasoning can be had it's as great a folly to make use of any other, as to grope for a thing in the dark, when you have a Candle standing by you. -John Arbuthnot
The secret to creativity is knowing how to hide your sources. -Albert Einstein
Two roads diverged in a wood, and I—I took the one less traveled by, and that has made all the difference. -Robert Frost
The more original a discovery, the more obvious it seems afterwards. -Arthur Koestler
Errors using inadequate data are much less than those using no data at all. -Charles Babbage
It is often stated that of all the theories proposed in this century, the silliest is quantum theory. In fact, some say that the only thing that quantum theory has going for it is that it is unquestionably correct. -Michio Kaku
Physics is much too hard for physicists. -David Hilbert
Men go abroad to wonder at the heights of mountains, at the huge waves of the sea, at the long courses of rivers, at the vast compass of the ocean, at the circular motions of the stars; and they pass by themselves without wondering. -Saint Augustine
I never did anything worth doing by accident, nor did any of my inventions come by accident; they came by work. -Thomas Edison
Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so. -Douglas Adams
The statistics on sanity are that one out of every four Americans is suffering from some form of mental illness. Think of your three best friends. If they're okay, then it's you. -Rita Mae Brown
Method is more important than strength . . . By dropping golden beads near a snake, a crow once managed to have a passerby kill the snake for the beads. -Siddha Nagarjuna
I have learned throughout my life as a composer chiefly through my mistakes and pursuits of false assumptions, not by my exposure to founts of wisdom and knowledge. -Igor Stravinsky
We may affirm absolutely that nothing great in the world has ever been accomplished without passion. -Georg Hegel
I think that a particle must have a separate reality independent of the measurements. That is an electron has spin, location and so forth even when it is not being measured. I like to think that the moon is there even if I am not looking at it. -Albert Einstein
There are unknown forces in nature; when we give ourselves wholly to her, without reserve, she lends them to us; she shows us these forms, which our watching eyes do not see, which our intelligence does not understand or suspect. -Auguste Rodin
He who builds a better mousetrap these days runs into material shortages, patent-infringement suits, work stoppages, collusive bidding, discount discrimination—and taxes. -H. E. Martz
Whatever one man is capable of conceiving, other men will be able to achieve. -Jules Verne
There is nothing so useless as doing efficiently that which should not be done at all. -Peter Drucker
Few people think more than two or three times a year; I have made an international reputation for myself by thinking once or twice a week. -George Bernard Shaw
It is amazing what you can accomplish if you do not care who gets the credit. -Harry S Truman
A hundred rabbits do not make a horse. -Russian Proverb
Speak to the earth, and it shall teach thee. -Job 12:8
Relativity teaches us the connection between the different descriptions of one and the same reality. -Albert Einstein
When nothing seems to help, I go and look at a stonecutter hammering away at his rock perhaps a hundred times without as much as a crack showing in it. Yet at the hundred and first blow it will split in two, and I know it was not that blow that did it, but all that had gone before. -Jacob Riis
On two occasions I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question. -Charles Babbage
To do two things at once is to do neither. -Publilius Syrus
A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it. -Albert Einstein
Eureka. [I have found it.] -Archimedes
It's all very well in practice, but it will never work in theory. -French management saying
Since we cannot know all that there is to be known about anything, we ought to know a little about everything. -Blaise Pascal
Don't worry about people stealing your ideas. If your ideas are any good, you'll have to ram them down people's throats. -Howard Aiken
Slight not what's near through aiming at what's far. -Euripides
Talk doesn't cook rice. -Chinese proverb
Science would be ruined if (like sports) it were to put competition above everything else, and if it were to clarify the rules of competition by withdrawing entirely into narrowly defined specialties.  The rare scholars who are nomads-by-choice are essential to the intellectual welfare of the settled disciplines. -Benoit Mandelbrot
We can't solve problems by using the same kind of thinking we used when we created them. -Albert Einstein
A moment's thinking is an hour in words. -Thomas Hood
If you see a formula in the Physical Review that extends over a quarter of a page, forget it. It's wrong. Nature isn't that complicated. -Bernd T. Matthias
By doubting we come at truth. -Cicero
Nothing is particularly hard if you divide it into small jobs. -Henry Ford
C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, it blows away your whole leg. -Bjarne Stroustrup
Everything you can imagine is real. -Picasso
The theoretical broadening which comes from having many humanities subjects on the campus is offset by the general dopiness of the people who study these things... -Richard Feynman
Basic research is what I am doing when I don't know what I am doing. -Werner von Braun
Physics is becoming so unbelievably complex that it is taking longer and longer to train a physicist. It is taking so long, in fact, to train a physicist to the place where he understands the nature of physical problems that he is already too old to solve them. -Eugene Wigner
Curiosity is one of the permanent and certain characteristics of a vigorous mind. -Samuel Johnson
It is impossible for a man to learn what he thinks he already knows. -Epictetus
Be not astonished at new ideas; for it is well known to you that a thing does not therefore cease to be true because it is not accepted by many. -Spinoza
An ounce of action is worth a ton of theory. -Friedrich Engels
Intellectual brilliance is no guarantee against being dead wrong. -David Fasold
Nothing in life is to be feared. It is only to be understood. -Marie Curie
Nothing is more difficult, and therefore more precious, than to be able to decide. -Napoleon
We are what we repeatedly do. Excellence, then, is not an act, but a habit. -Aristotle
Many of life's failures are people who did not realize how close they were to success when they gave up. -Thomas Alva Edison
There is no reason anyone would want a computer in their home. -Ken Olson, president,chairman and founder of DEC, 1977
We must admit with humility that, while number is purely a product of our minds, space has a reality outside our minds, so that we cannot completely prescribe its properties a priori. -Karl Friedrich Gauss
The fundamental principle of science, the definition almost, is this: the sole test of the validity of any idea is experiment. -Richard P. Feynman
All is flux, nothing stays still. -Heraclitus
All men are ignorant, just in different fields -Einstein
It is not enough to have a good mind. The main thing is to use it well. -Rene Descartes
We will either find a way or make one. -Hannibal
One could not be a successful scientist without realizing that, in contrast to the popular conception supported by newspapers and mothers of scientists, a goodly number of scientists are not only narrow-minded and dull, but also just stupid. -James Watson
In general we are least aware of what our minds do best. -Marvin Minsky
Take rest; a field that has rested gives a bountiful crop. -Ovid
The progress of science is often affected more by the frailties of humans and their institutions than by the limitations of scientific measuring devices. The scientific method is only as effective as the humans using it. It does not automatically lead to progress. -Steven S. Zumdahl
A professional is a person who can do his best at a time when he doesn't particularly feel like it. -Alistair Cooke
When someone points skyward, it's the fool that looks at the finger. -Proverb
You can use all the quantitative data you can get, but you still have to distrust it and use your own intelligence and judgment. -Alvin Toffler
Theory attracts practice as the magnet attracts iron. -Karl Friedrich Gauss
A good idea will keep you awake during the morning, but a great idea will keep you awake during the night. -Marilyn Vos Savant
An intellectual is a man who takes more words than necessary to tell more than he knows. -Dwight D. Eisenhower
It requires a very unusual mind to undertake the analysis of the obvious. -Alfred North Whitehead
In preparing for battle I have always found that plans are useless, but planning is indispensable. -Dwight D. Eisenhower
Science is a wonderful thing if one does not have to earn one's living at it. -Albert Einstein
First learn the meaning of what you say, and then speak. -Epictetus
Nearly every man who develops an idea works at it up to the point where it looks impossible, and then gets discouraged. That's not the place to become discouraged. -Thomas A. Edison
Mathematics is an interesting intellectual sport but it should not be allowed to stand in the way of obtaining sensible information about physical processes. -Richard W. Hamming
[Criticized for using formal mathematical manipulations, without understanding how they worked:] Should I refuse a good dinner simply because I do not understand the process of digestion? -Oliver Heaviside
Never cut what you can untie. -Joseph Joubert
I never let schooling interfere with my education. -Mark Twain
This example illustrates the differences in the effects which may be produced by research in pure or applied science. A research on the lines of applied science would doubtless have led to improvement and development of the older methods—the research in pure science has given us an entirely new and much more powerful method. In fact, research in applied science leads to reforms, research in pure science leads to revolutions, and revolutions, whether political or industrial, are exceedingly profitable things if you are on the winning side. -J. J. Thomson
The more important fundamental laws and facts of physical science have all been discovered, and these are now so firmly established that the possibility of their ever being supplemented in consequence of new discoveries is exceedingly remote. -Albert Michelson, 1903
A good rest is half the work. -Yugoslav Proverb
Most of the fundamental ideas of science are essentially simple, and may, as a rule, be expressed in a language comprehensible to everyone. -Albert Einstein
Creativity is the power to connect the seemingly unconnected. -William Plomer
A man who dares to waste an hour of time has not discovered the value of life. -Charles Darwin
There are three principal means of acquiring knowledge. . . observation of nature, reflection, and experimentation. Observation collects facts; reflection combines them; experimentation verifies the result of that combination. -Denis Diderot
The woods are lovely, dark and deep. But I have promises to keep, And miles to go before I sleep, And miles to go before I sleep. -Robert Frost
It is not really difficult to construct a series of inferences, each dependent upon its predecessor and each simple in itself. If, after doing so, one simply knocks out all the central inferences and presents one's audience with the starting-point and the conclusion, one may produce a startling, though perhaps a meretricious, effect. -Sir Arthur Conan Doyle
Furious activity is no substitute for understanding. -H. H. Williams
Where so many hours have been spent in convincing myself that I am right, is there not some reason to fear I may be wrong? -Jane Austen
If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get a million miles per gallon, and explode once a year, killing everyone inside. -Robert X. Cringely
There was never a genius without a tincture of madness. -Aristotle
Do not seek to follow in the footsteps of the men of old; seek what they sought. -Proverb
Everything should be made as simple as possible, but not simpler. -Albert Einstein
Mathematics is a game played according to certain simple rules with meaningless marks on paper. -David Hilbert
Though this be madness, yet there is method in't. -William Shakespeare, Hamlet
Universities are full of knowledge; the freshmen bring a little in and the seniors take none away, and knowledge accumulates. -Abbot Lawrence Lowell, president of Harvard University
What we become depends on what we read after all of the professors have finished with us. The greatest university of all is a collection of books. -Thomas Carlyle
He is educated who knows how to find out what he doesn't know. -George Simmel
The difference between the right word and the almost right word is the difference between lightning and a lightning bug. -Mark Twain
There is a certain majesty in simplicity which is far above all the quaintness of wit. -Alexander Pope
Our observation of nature must be diligent, our reflection profound, and our experiments exact. We rarely see these three means combined; and for this reason, creative geniuses are not common. -Denis Diderot
Descartes commanded the future from his study more than Napoleon from the throne. -Oliver Wendell Holmes
Unquestionably, there is progress.  The average American now pays out twice as much in taxes as he formerly got in wages. -H. L. Mencken
Let thy speech be better than silence, or be silent. -Dionysius the elder
People forget how fast you did a job—but they remember how well you did it. -Howard W. Newton
Physics as we know it will be over in six months. -Max Born, 1928
There are in this world optimists who feel that any symbol that starts off with an integral sign must necessarily denote something that will have every property that they should like an integral to possess. This of course is quite annoying to us rigorous mathematicians; what is even more annoying is that by doing so they often come up with the right answer. -E. J. McShane
I have learned to use the word impossible with the greatest caution. -Werner von Braun
To explain all nature is too difficult a task for any one man or even for any one age. `Tis much better to do a little with certainty, and leave the rest for others that come after you, than to explain all things. -Isaac Newton
Schooling, instead of encouraging the asking of questions, too often discourages it. -Madeleine L'Engle
Truth springs from argument amongst friends. -David Hume
Whenever man comes up with a better mousetrap, nature immediately comes up with a better mouse. -James Carswell
Better three hours too soon than one minute too late -Shakespeare
We learn something every day, and lots of times it's that what we learned the day before was wrong. -Bill Vaughn
Delay is preferable to error. -Thomas Jefferson
We adore chaos because we love to produce order. -M. C. Escher
There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order to things. -Niccolo Machiavelli
A closed mind is like a closed book; just a block of wood. -Chinese proverb
Mathematics began to seem too much like puzzle solving. Physics is puzzle solving too, but of puzzles created by nature, not by the mind of man. -Maria Goeppert-Mayer
The purpose of models is not to fit the data but to sharpen the questions. -Samuel Karlin
The Americans have need of the telephone, but we do not. We have plenty of messenger boys. -Sir William Preece, chief engineer of the British Post Office, 1876
Sometimes it's easier to beg for forgiveness than ask for permission. -Proverb
Any man whose errors take ten years to correct is quite a man. -J. Robert Oppenheimer (speaking of Albert Einstein)
Mathematicians are like Frenchmen: whatever you say to them they translate into their own language and forthwith it is something entirely different. -Goethe
Where there is matter, there is geometry. -Johannes Kepler
It is a common error to infer that things which are consecutive in order of time have necessarily the relation of cause and effect. -Jacob Bigelow
Moderation is a fatal thing. Nothing succeeds like excess. -Oscar Wilde
Never try to catch two frogs with one hand. -Chinese Proverb
I have discovered that all human evil comes from this, man's being unable to sit still in a room. -Blaise Pascal
University President: "Why is it that you physicists always require so much expensive equipment? Now the Department of Mathematics requires nothing but money for paper, pencils, and erasers . . . and the Department of Philosophy is better still. It doesn't even ask for erasers." -Isaac Asimov
Men learn while they teach. -Seneca
If it can't be expressed in figures, it is not science; it is opinion. -Lazarus Long
The people who get on in this world are the people who get up and look for the circumstances they want, and , if they can't find them, make them. -George Bernard Shaw
There is nothing either good or bad, but thinking makes it so. -William Shakespeare
The world is governed more by appearance than realities so that it is fully as necessary to seem to know something as to know it. -Daniel Webster
I have never met a man so ignorant that I couldn't learn something from him. -Galileo Galilei



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© 2001
Charles W. Thiel
Department of Physics
Montana State University
EPS Building, Room 264
Bozeman, Montana 59717
Telephone: 406-994-4363
FAX: 406-994-4452
thiel@physics.montana.edu
Last Updated February 10, 2002
Hieroglyph