From my close contact with artists and chess players I have come to the personal conclusion that while all artists are not chess players, all chess players are artists.

Summum ius, summa iniuria.

Mathematics requires a small dose, not of genius, but of an imaginative freedom which, in a larger dose, would be insanity.

I don’t believe in psychology. I believe in good moves.

A mathematician is a machine for turning coffee into theorems.