Henri Poincare Quotes

It is through science that we prove, but through intuition that we discover.
Henri Poincare

Science, Through, Intuition

Point set topology is a disease from which the human race will soon recover.
Henri Poincare

Human, Point, Race

A sane mind should not be guilty of a logical fallacy, yet there are very fine minds incapable of following mathematical demonstrations.
Henri Poincare

Mind, Guilty, Minds

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

Science, House, Facts

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

Nature, Beautiful, Study

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

Small, Cannot, Chance

A small error in the former will produce an enormous error in the latter.
Henri Poincare

Small, Error, Former

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

Life, Nature, Beautiful

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

Nature, Same, Moment

Invention consists in avoiding the constructing of useless contraptions and in constructing the useful combinations which are in infinite minority.
Henri Poincare

Useful, Useless, Avoiding

Mathematicians are born, not made.
Henri Poincare

Thought is only a flash between two long nights, but this flash is everything.
Henri Poincare

Long, Everything, Thought

To doubt everything, or, to believe everything, are two equally convenient solutions; both dispense with the necessity of reflection.
Henri Poincare

Everything, Doubt, Two

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

Work, Nature, Great

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

Earth, Whether, Space

Facts do not speak.
Henri Poincare

Geometry is not true, it is advantageous.
Henri Poincare

How is an error possible in mathematics?
Henri Poincare

Possible, Error

Hypotheses are what we lack the least.
Henri Poincare

Lack, Hypotheses

Ideas rose in clouds; I felt them collide until pairs interlocked, so to speak, making a stable combination.
Henri Poincare

Speak, Making, Until

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

Deep, Different, Impossible

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

Same, Situation, Laws

In the old days when people invented a new function they had something useful in mind.
Henri Poincare

Mind, Old, Days

It has adopted the geometry most advantageous to the species or, in other words, the most convenient.
Henri Poincare

Words, Geometry, Adopted

It is far better to foresee even without certainty than not to foresee at all.
Henri Poincare

Far, Certainty, Foresee

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Biography

Nationality: French

Type: Mathematician

Born: April 29, 1854

Died: July 17, 1912

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