The great creators - the thinkers, the artists, the scientists, the inventors - stood alone against the men of their time. Every great new thought was opposed. Every great new invention was denounced. The first motor was considered foolish. The airplane was considered impossible... But the men of unborrowed vision went ahead. They fought, they suffered and they paid. But they won.

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.

Are my characters copies of people in real life? ... Don't ever believe the stories about authors putting people into novels. That idea is a kind of joke on both authors and readers. All the readers believe that authors do it. All the authors know that it can't be done.

He walked, groping for a sentence that hung in his mind as an empty shape. He could neither fill it or dismiss it.

Just as man's physical existence was liberated when he grasped that 'nature, to be commanded, must be obeyed', so his consciousness will be liberated when grasps that nature, to be apprehended, must be obeyed - that the rules of cognition must be derived from the nature of existence and the nature, the identity, of his cognitive faculty.

Identify the dominant philosophy of a society and you can predict its future.

Do not consider Collectivists as "sincere but deluded idealists". The proposal to enslave some men for the sake of others is not an ideal; brutality is not "idealistic," no matter what its purpose. Do not ever say that the desire to "do good" by force is a good motive. Neither power-lust nor stupidity are good motives.