Man cannot survive except through his mind. He comes on earth unarmed. His brain is his only weapon. Animals obtain food by force. man had no claws, no fangs, no horns, no great strength of muscle. He must plant his food or hunt it. To plant, he needs a process of thought. To hunt, he needs weapons,and to make weapons - a process of thought. From this simplest necessity to the highest religious abstraction, from the wheel to the skyscraper, everything we are and we have comes from a single attribute of man -the function of his reasoning mind.

He never felt lonliness except when he was happy.

every man is free to rise as far as he's able or willing, but the degree to which he thinks determines the degree to which he'll rise.

What is man? He's just a collection of chemicals with delusions of grandeur.

A man's sexual choice is the result and the sum of his fundamental convictions.... He will always be attracted to the woman who reflects his deepest vision of himself, the woman whose surrender permits him to experience a sense of self-esteem. The man who is proudly certain of his own value, will want the highest type of woman he can find, the woman he admires, the strongest, the hardest to conquer--because only the possession of a heroine will give him the sense of an achievement.

You don't love causes. You don't love everybody indiscriminately. You love only those who deserve 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.