Jules Henri Poincare

1854 - 1912

A Quote by Jules Henri Poincaré

Hypotheses are what we lack the least.

Jules Henri Poincare (1854 - 1912)

Contributed by: Zaady

A Quote by Jules Henri Poincaré on art, nature, pleasure, scientists, and work

A scientist worthy of his name, about all a mathematician, experiences in his work is the same impression as an artist; his pleasure is as great and of the same nature.

Jules Henri Poincare (1854 - 1912)

Source: N. Rose Mathematical Maxims and Minims, Raleigh NC: Rome Press Inc., 1988.

Contributed by: Zaady

A Quote by Jules Henri Poincaré on earth, existence, and meaning

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.... The two propositions: "The earth turns round" and "it is more convenient to suppose the earth turns round" have the same meaning; there is nothing more in the one than in the other.

Jules Henri Poincare (1854 - 1912)

Source: La Science et l'hypothèse.

Contributed by: Zaady

A Quote by Jules Henri Poincaré on adoption, mind, words, and world

. . . by natural selection our mind has adapted itself to the conditions of the external world. It has adopted the geometry most advantageous to the species or, in other words, the most convenient. Geometry is not true, it is advantageous.

Jules Henri Poincare (1854 - 1912)

Source: Science and Method.

Contributed by: Zaady

A Quote by Jules Henri Poincaré on debate, disease, generations, mathematics, and theory

Later generations will regard Mengenlehre (set theory) as a disease from which one has recovered. [Whether or not he actually said this is a matter of debate amongst historians of mathematics.]

Jules Henri Poincare (1854 - 1912)

Source: The Mathematical Intelligencer, vol 13, no. 1, Winter 1991.

Contributed by: Zaady

A Quote by Jules Henri Poincaré on discovery, generations, knowledge, preparation, and spontaneity

Mathematical discoveries, small or great are never born of spontaneous generation. They always presuppose a soil seeded with preliminary knowledge and well prepared by labour, both conscious and subconscious.

Jules Henri Poincare (1854 - 1912)

Contributed by: Zaady

A Quote by Jules Henri Poincaré on art, giving, mathematics, names, poetry, and quotations

Mathematics is the art of giving the same name to different things. [As opposed to the quotation: Poetry is the art of giving different names to the same thing].

Jules Henri Poincare (1854 - 1912)

Contributed by: Zaady

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