The evil of the world is made possible by nothing but the sanction you give it.

The art of writing is the art of doing what you think you're doing. This is not as simple as it sounds. It implies a very difficult undertaking: the necessity to think. And it implies the requirement to think out three separate, very hard problems: What is it you want to say? How are you going to say it? Have you really said it?

The ladder of success is best climbed by stepping on the rungs of opportunity.

A culture is made — or destroyed — by its articulate voices.

I am not primarily an advocate of capitalism, but of egoism; I am not primarily an advocate of egoism, but of reason. If one recognizes the supremacy of reason and applies it consistently, all the rest follows.

They had rejected the soul-body dichotomy, with its two corollaries: the impotence of man's mind and the damnation of this earth; they had rejected the doctrine of suffering as man's metaphysical fate, they proclaimed man's right to the pursuit of happiness and were determined to establish on earth the conditions required for man's proper existence, by the "unaided" power of their intellect.

A gun is not an argument.