I want something good to die for to make it beautiful to live.

Mathematics is a game played according to certain simple rules with meaningless marks on paper.

Mathematics is not a deductive science - that’s a cliché. When you try to prove a theorem, you don’t just list the hypotheses, and then start to reason. What you do is trial and error, experimentation, guesswork.

Voetballen is simpel, maar het moeilijkste wat er is, is simpel voetballen.

The feminist bias is that women are equal to men and the male chauvinist bias is that women are inferior. The unbiased view is that the truth lies somewhere in between.