Definitions are the guardians of rationality, the first line of defense against the chaos of mental disintegration.

It is not advisable to venture unsolicited opinions. You should spare yourself the embarrassing discovery of their exact value to your listener.

I have no faith at all. I only hold convictions.

For centuries, the battle of morality was fought between those who claimed that your life belongs to God and those who claimed that it belongs to your neighbors - between those who preached that the good is self-sacrifice for the sake of ghosts in heaven and those who preached that the good is self-sacrifice for the sake of incompetents on earth. And no one came to say that your life belongs to you and that the good is to live it.

The man of authentic self-confidence is the man who relies on the judgment of his own mind. Such a man is not malleable; he may be mistaken, he may be fooled in a given instance, but he is inflexible in regard to the absolutism of reality, i.e., in seeking and demanding truth.

She was incapable of love for any object not of her own choice and she resented anyone's demand for it.

That love is reverence, and worship, and glory, and the upward glance. Not a bandage for dirty sores. But they don’t know it. Those who speak of love most promiscuously are the ones who’ve never felt it. They make some sort of feeble stew out of sympathy, compassion, contempt, and general indifference, and they call it love. Once you’ve felt what it means to love as you and I know it – the total passion for the total height – you’re incapable of anything less.