"It has been said that man is a rational animal. All my life I have been searching for evidence to support this."

"The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts."

"I am a mathematician and a logician, and I do not find it easy to be human."

"Patriotism is the willingness to kill and be killed for trivial reasons."

"I believe that when I die I shall rot, and nothing of my ego will survive."