Achievement of your happiness is the only moral purpose of your life, and that happiness, not pain or mindless self-indulgence, is the proof of your moral integrity, since it is the proof and the result of your loyalty to the achievement of your values.

Professional intellectuals are the voice of a culture and are, therefore, its leaders, its integrators and its bodyguards.

Man has a single basic choice: to think or not, and that is the gauge of his virtue. Moral perfection is an unbreached rationality-not the degree of your intelligence, but the full and relentless use of your mind, not the extent of your knowledge, but the acceptance of reason as an absolute.

We didn't really have to take everything so seriously, did we?

If one's actions are honest, one does not need the predated confidence of others.

But what is freedom? Freedom from what? There is nothing to take a man's freedom away from him, save other men. To be free, a man must be free of his brothers. That is freedom. That and nothing else.

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.