Neither a man nor a crowd nor a nation can be trusted to act humanely or to think sanely under the influence of a great fear.

None but a coward dares to boast that he has never known fear.

I believe in using words, not fists. I believe in my outrage knowing people are living in boxes on the street. I believe in honesty. I believe in a good time. I believe in good food. I believe in sex.

We are faced with the paradoxical fact that education has become one of the chief obstacles to intelligence and freedom of thought.

Freedom in general may be defined as the absence of obstacles to the realization of desires.

Freedom of opinion can only exist when the government thinks itself secure.

Freedom comes only to those who no longer ask of life that it shall yield them any of those personal goods that are subject to the mutations of time.

I would never die for my beliefs because I might be wrong.

The world is full of magical things patiently waiting for our wits to grow sharper.

I like mathematics because it is not human and has nothing particular to do with this planet or with the whole accidental universe - because, like Spinoza's God, it won't love us in return.