Henri Poincare Quotes
Quotations and aphorisms by Henri Poincare:
If that enabled us to predict the succeeding situation with the same approximation, that is all we require, and we should say that the phenomenon had been predicted, that it is governed by the laws.
~Henri Poincare
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A very small cause which escapes our notice determines a considerable effect that we cannot fail to see, and then we say that the effect is due to chance.
~Henri Poincare
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Mathematicians do not study objects, but relations between objects.
~Henri Poincare
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Need we add that mathematicians themselves are not infallible?
~Henri Poincare
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A scientist worthy of his name, about all a mathematician, experiences in his work the same impression as an artist; his pleasure is as great and of the same nature.
~Henri Poincare
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Ideas rose in clouds; I felt them collide until pairs interlocked, so to speak, making a stable combination.
~Henri Poincare
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How is an error possible in mathematics?
~Henri Poincare
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Thought is only a flash between two long nights, but this flash is everything.
~Henri Poincare
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Mathematics is the art of giving the same name to different things.
~Henri Poincare
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One would have to have completely forgotten the history of science so as to not remember that the desire to know nature has had the most constant and the happiest influence on the development of mathematics.
~Henri Poincare
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Mathematical discoveries, small or great are never born of spontaneous generation.
~Henri Poincare
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Absolute space, that is to say, the mark to which it would be necessary to refer the earth to know whether it really moves, has no objective existence.
~Henri Poincare
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A small error in the former will produce an enormous error in the latter.
~Henri Poincare
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Point set topology is a disease from which the human race will soon recover.
~Henri Poincare
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Hypotheses are what we lack the least.
~Henri Poincare
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It has adopted the geometry most advantageous to the species or, in other words, the most convenient.
~Henri Poincare
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In the old days when people invented a new function they had something useful in mind.
~Henri Poincare
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Science is facts.
~Henri Poincare
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Mathematicians are born, not made.
~Henri Poincare
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Invention consists in avoiding the constructing of useless contraptions and in constructing the useful combinations which are in infinite minority.
~Henri Poincare
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The mind uses its faculty for creativity only when experience forces it to do so.
~Henri Poincare
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It is far better to foresee even without certainty than not to foresee at all.
~Henri Poincare
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It is the harmony of the diverse parts, their symmetry, their happy balance; in a word it is all that introduces order, all that gives unity, that permits us to see clearly and to comprehend at once both the ensemble and the details.
~Henri Poincare
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Thus, they are free to replace some objects by others so long as the relations remain unchanged.
~Henri Poincare
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Geometry is not true, it is advantageous.
~Henri Poincare
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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.
~Henri Poincare
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To invent is to discern, to choose.
~Henri Poincare
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A sane mind should not be guilty of a logical fallacy, yet there are very fine minds incapable of following mathematical demonstrations.
~Henri Poincare
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It is through science that we prove, but through intuition that we discover.
~Henri Poincare
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Science is built up of 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.
~Henri Poincare
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What is it indeed that gives us the feeling of elegance in a solution, in a demonstration?
~Henri Poincare
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If we knew exactly the laws of nature and the situation of the universe at the initial moment, we could predict exactly the situation of the same universe at a succeeding moment.
~Henri Poincare
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Facts do not speak.
~Henri Poincare
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If one looks at the different problems of the integral calculus which arise naturally when one wishes to go deep into the different parts of physics, it is impossible not to be struck by the analogies existing.
~Henri Poincare
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The scientist does not study nature because it is useful; he studies it because he delights in it, and he delights in it because it is beautiful.
~Henri Poincare
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To doubt everything, or, to believe everything, are two equally convenient solutions; both dispense with the necessity of reflection.
~Henri Poincare
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No more than these machines need the mathematician know what he does.
~Henri Poincare
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If nature were not beautiful, it would not be worth knowing, and if nature were not worth knowing, life would not be worth living.
~Henri Poincare
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Just as houses are made of stones, so is science made of facts.
~Henri Poincare
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