To Invent Is To Discern, To Choose.

But All Of My Efforts Served Only To Make Me Better Acquainted With The Difficulty, Which In Itself Was Something.

Hypotheses Are What We Lack The Least.

One Geometry Cannot Be More True Than Another; It Can Only Be More Convenient.

All Great Progress Takes Place When Two Sciences Come Together, And When Their Resemblance Proclaims Itself, Despite The Apparent Disparity Of Their Substance.

Mathematicians Are Born, Not Made.