A man's ego is the fountainhead of human progress.

The more you learn, the more you know that you know nothing.

The verdict you pronounce upon the source of your livelihood is the verdict you pronounce upon your life.

To know one's own desires, their meaning and their costs requires the highest human virtue: rationality.

Collectivism, as an intellectual power and a moral ideal, is dead. But freedom and individualism, and their political expression, capitalism, have not yet been discovered.

My views on charity are very simple. I do not consider it a major virtue and, above all, I do not consider it a moral duty. There is nothing wrong in helping other people, if and when they are worthy of the help and you can afford to help them. I regard charity as a marginal issue. What I am fighting is the idea that charity is a moral duty and a primary virtue.

When you see that trading is done, not by consent, but by compulsion...th at in order to produce, you need to obtain permission from men who produce nothing-you may know that your society is doomed.