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.

A man doesn't borrow pieces of his body. A building doesn't borrow hunks of its soul. Its maker gives it the soul and every wall, window and stairway to express it.

The necessary consequence of man's right to life is his right to self-defense. In a civilized society, force may be used only in retaliation and only against those who initiate its use. All the reasons which make the initiation of physical force an evil, make the retaliatory use of physical force a moral imperative. If some "pacifist" society renounced the retaliatory use of force, it would be left helplessly at the mercy of the first thug who decided to be immoral. Such a society would achieve the opposite of its intention: instead of abolishing evil, it would encourage and reward it.

If you write a whole line of zeroes, it's still — nothing.

If the rest of them can survive only by destroying us, then why should we wish them to survive? . . . Nothing can make it moral to destroy the best. One can't be punished for being good. One can't be penalized for ability.

Guilt is a rope that wears thin.

In order to deal with reality successfully - to pursue and achieve the values which his life requires - man needs self-esteem; he needs to be confident of his efficacy and worth.