For the first time since her return, she felt pain, a violent pain, but it made her feel alive, because it was worth feeling.

Self-esteem is reliance on one's power to think. It cannot be replaced by one's power to deceive. The self-confidence of a scientist and the self-confidence of a con man are not interchangeable states, and do not come from the same psychological universe. The success of a man who deals with reality augments his self-confidence. The success of a con man augments his panic.

The code of competence is the only system of morality that's on a gold standard.

Rationality is the recognition of the fact that nothing can alter the truth and nothing can take precedence over that act of perceiving it.

The [U.S.] Constitution is a limitation on the government, not on private individuals ... it does not prescribe the conduct of private individuals, only the conduct of the government ... it is not a charter for government power, but a charter of the citizen's protection against the government.

I like to think of fire held in a man's hand. Fire, a dangerous force, tamed at his fingertips. I often wonder about the hours when a man sits alone, watching the smoke of a cigarette, thinking. I wonder what great things have come from such hours. When a man thinks, there is a spot of fire alive in his mind--and it is proper that he should have the burning point of a cigarette as his one expression.

Living in a society, instead of on a desert island, does not relieve a man of the responsibility of supporting his own life.