Thinking men cannot be ruled; ambitious men do not stagnate.

Learn to distinguish the difference between errors of knowledge and breaches of morality

There's nothing of any importance in life — except how well you do your work. Nothing. Only that. Whatever else you are, will come from that. It's the only measure of human value.

Productiveness is your acceptance of morality, your recognition of the fact that you choose to live-that productive work is the process by which man's consciousness controls his existence, a constant process of acquiring knowledge and shaping matter to fit one's purpose, of translating an idea into physical form, of remaking the earth in the image of one's values-that all work is creative work if done by a thinking mind.

It's not a question of who will allow me to do it, it's a question of who will stop me.

To the extent to which a man is rational, life is the premise directing his actions. To the extent to which he is irrational, the premise directing his actions is death.

Mysticism requires the notion of the unknowable, which is revealed to some and withheld from others; this divides men into those who feel guilt and those who cash in on it.