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 Ayn Rand Lexicon: Objectivism from A to Z (ed. Penguin, 1988) - ISBN: 9781101137246