The more you learn, the more you know that you know nothing.

Remember that rights are moral principles which define and protect a man's freedom of action, but impose no obligations on other men.

Are you in a universe which is ruled by natural laws and, therefore, is stable, firm, absolute - and knowable? Or are you in an incomprehensible chaos, a realm of inexplicable miracles, an unpredictable, unknowable flux, which your mind is impotent to grasp? The nature of your actions - and of your ambition - will be different, according to which set of answers you come to accept.

Do not let your fire go out ... Do not let the Hero in your soul perish ... Check your road and the nature of your battle. The world you desired can be won. It exists, it is real, it is possible, it is yours.

The causes of illusions are not pretty to discover. They're either vicious or tragic.

Some day, the world will discover that, without thought, there can be no love.

When you see that trading is done, not by consent, but by compulsion...th at in order to produce, you need to obtain permission from men who produce nothing-you may know that your society is doomed.