Best Henri Poincare Sayings
- Every good mathematician should also be a good chess player and vice versa. Chess
- It may happen that small differences in the initial conditions produce very great ones in the final phenomena. Chaos
- A very small cause, which escapes us, determines a considerable effect which we cannot ignore, and we say that this effect is due to chance. Cannot Ignore
- Most striking at first is the appearance of sudden illumination, a manifest sign of long unconscious prior work. Appearance
- What is a good definition? For the philosopher or the scientist, it is a definition which applies to all the objects to be defined, and… All
- A reality completely independent of the spirit that conceives it, sees it, or feels it, is an impossibility. A world so external as that, even… Completely
- Thus, be it understood, to demonstrate a theorem, it is neither necessary nor even advantageous to know what it means. The geometer might be replaced… Advantageous
- It may be appropriate to quote a statement of Poincare, who said (partly in jest no doubt) that there must be something mysterious about the… Appropriate
- 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… Absolute
- Hypotheses are what we lack the least. Funny
- . . . by natural selection our mind has adapted itself to the conditions of the external world. It has adopted the geometry most advantageous… Adapted
- 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… Completely
- When the physicists ask us for the solution of a problem, it is not drudgery that they impose on us, on the contrary, it is… Ask
- Thought must never submit, neither to a dogma, nor to a party, nor to a passion, nor to an interest, nor to a preconceived idea,… Ceasing
- ...the feeling of mathematical beauty, of the harmony of numbers and of forms, of geometric elegance. It is a genuinely aesthetic feeling, which all mathematicians… Aesthetic
- Geometry is the art of correct reasoning from incorrectly drawn figures. Art
- But for harmony beautiful to contemplate, science would not be worth following. Aesthetic
- One geometry cannot be more true than another; it can only be more convenient. Convenient
- In the old days when people invented a new function they had something useful in mind. Days
- Just as houses are made of stones, so is science made of facts. Facts
- Need we add that mathematicians themselves are not infallible? Add
- To invent is to discern, to choose. Choose
- A first fact should surprise us, or rather would surprise us if we were not used to it. How does it happen there are people… Accepted
- Mathematicians do not study objects, but relations among objects; they are indifferent to the replacement of objects by others as long the relations don't change.… Among
- The task of the educator is to make the child's spirit pass again where its forefathers have gone, moving rapidly through certain stages but suppressing… Certain
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