"If an opinion contrary to your own makes you angry, that is a sign that you are subconsciously aware of having no good reason for thinking as you do."

"We civilised men do our utmost to check the process of elimination; we build asylums for the imbecile, the maimed, and the sick .... Thus the weak members of civilised societies propagate their kind. …"

"I am not a fan of the human race."

"All movements go too far."

"Mathematics, rightly viewed, possesses not only truth, but supreme beauty — a beauty cold and austere, like that of sculpture, without appeal to any part of our weaker nature, without the gorgeous tra…"