"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

"Never think that a man who is too busy for you has time for you."

"Civilization is the process of setting man free from men."

"The purpose of production is to create wealth, not to support parasites."

"Contradictions do not exist. Whenever you think you are facing a contradiction, check your premises. You will find that one of them is wrong."