Live and act within the limit of your knowledge and keep expanding it to the limit of your life. Redeem your mind from the hockshops of authority. Accept the fact that you are not omniscient, but playing a zombie will not give you omniscience-that your mind is fallible, but becoming mindless will not make you infallible-that an error made on your own is safer than ten truths accepted on faith, because the first leaves you the means to correct it, but the second destroys your capacity to distinguish truth from error.

But neither life nor happiness can be achieved by the pursuit of irrational whims. Just as man is free to attempt to survive in any random manner, but will perish unless he lives as his nature requires, so he is free to seek his happiness in any mindless fraud, but the torture of frustration is all he will find, unless he seeks the happiness proper to man. The purpose of morality is to teach you, not to suffer and die, but to enjoy yourself and live.

It is not fools that I seek to address.

It's easy to run to others. It's so hard to stand on one's own record. You can fake virtue for an audience. You can't fake it in your own eyes. Your ego is your strictest judge. They run from it. They spend their lives running. It's easier to donate a few thousand to charity and think oneself noble than to base self-respect on personal standards of personal achievement. It's simple to seek substitutes for competence--such easy substitutes: love, charm, kindness, charity. But there is no substitute for competence.

A rational man knows-or makes it a point to discover-the source of his emotions, the basic premises from which they come.

No matter how vast your knowledge or how modest, it is your own mind that has to acquire it. It is only with your own knowledge that you can deal. It is only your own knowledge that you can claim to possess or ask others to consider. Your mind is your only judge of truth - and if others dissent from your verdict, reality is the court of final appeal. Nothing but a man's mind can perform that complex, delicate, crucial process of identification which is thinking. Nothing can direct the process but his own judgment. Nothing can direct his judgment but his moral integrity.

I will not die, it's the world that will end." paraphrase of unknown philosopher