That the world is in a bad shape is undeniable, but there is not the faintest reason in history to suppose that Christianity offers a way out.

Philosophy, though unable to tell us with certainty what is the true answer to the doubts which it raises, is able to suggest many possiblities which enlarge our thoughts and free them from the tyranny of custom. Thus, while diminishing our feeling of certainty as to what things are, it greatly increases our knowledge as to what the may be; it removes the somewhat arrogant dogmatism of those who have never travelled into the region of liberating doubt, and it keeps alive our sense of wonder by showing familar things in an unfamilar aspect

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

Machines deprive us of two things which are certainly important ingredients of human happiness, namely, spontaneity and variety.

I have come to realize that an early symptom of approaching mental illness is the belief that one's work is terribly important. If you consider your work very important you should take a day off.

The Axiom of Choice is necessary to select a set from an infinite number of socks, but not an infinite number of shoes.

Religion is based, I think, primarily and mainly upon fear.