I hold all knowledge that is concerned with things that actually exist - all that is commonly called Science - to be of very slight value compared to the knowledge which, like philosophy and mathematics, is concerned with ideal and eternal objects, and is freed from this miserable world which God has made.

Mathematics is only the art of saying the same thing in different words.

Some people would rather die than think.

This, however, is a passing nightmare; in time the earth will become again incapable of supporting life, and peace will return.

Never let yourself be diverted, either by what you wish to believe, or what you think could have beneficent social effects if it were believed; but look only and solely at what are the facts.

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

There will still be things that machines cannot do. They will not produce great art or great literature or great philosophy; they will not be able to discover the secret springs of happiness in the human heart; they will know nothing of love and friendship.