Have you felt it too? Have you seen how your best friends love everything about you- except the things that count? And your most important is nothing to them; nothing, not even a sound they can recognize.

A rational process is a moral process. You may make an error at any step of it, with nothing to protect you but your own severity, or you may try to cheat, to fake the evidence and evade the effort of the quest - but if devotion to the truth is the hallmark of morality, then there is no greater, nobler, more heroic form of devotion than the act of a man who assumes the responsibility of thinking.

In the name of the values that keep you alive, do not let your vision of man be distorted by the ugly, the cowardly, the mindless in those who have never achieved his title. Do not lose your knowledge that man’s proper estate is an upright posture, an intransigent mind and a step that travels unlimited roads.

It's because...you see, if we had souls, which we haven't, and if our souls met--yours and mine--they'd fight to the death. But after they had torn each other to pieces, to the very bottom, they'd see that they had the same root.

I shall choose friends among men, but neither slaves nor masters. And I shall choose only such as please me, and them I shall love and respect, but neither command nor obey. And we shall join our hands when we wish, or walk alone when we so desire.

The man-worshipers, in my sense of the term, are those who see man's highest potential and strive to actualize it. The man-haters are those who regard man as a helpless, depraved, contemptible creature-and struggle never to let him discover otherwise.

Whether you know the shape of a pebble or the structure of a solar system, the anxioms remain the same: that it exists and that you know it.