What I want you to understand, is the full evil of those who claim to have become convinced that this earth, by its nature, is a realm of malevolence where the good has no chance to win. Let them check their premises. Let them check their standards of value. Let them check - before they grant themselves the unspeakable license of evil-as-necessity - whether they know what is the good and what are the conditions it requires.

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

Collectivism requires self-sacrifice, the subordination of one's interests to those of others.

Within the extent of your knowledge, you are right.

My happiness is not the means to any end. It is the end. It is its own goal. It is its own purpose.

It's the hardest thing in the world - to do what we want. And it takes the greatest kinds of courage.

If some men are entitled by right to the products of the work of others, it means that those others are deprived of rights and condemned to slave labor.