Beware the irrational, however seductive. Shun the 'transcendent' and all who invite you to subordinate or annihilate yourself. Distrust compassion; prefer dignity for yourself and others. Don't be afraid to be thought arrogant or selfish. Picture all experts as if they were mammals. Never be a spectator of unfairness or stupidity. Seek out argument and disputation for their own sake; the grave will supply plenty of time for silence. Suspect your own motives, and all excuses. Do not live for others any more than you would expect others to live for you.

Dare to exercise rational thinking.

Never trust books on the question of whether or not to trust your rational thinking. Trust your rational thinking on the question of whether or not to trust the books.

You are modern humans of the civilized world. And modern humans rise beyond all laws and superstitions of the society. They help their fellow beings to rise from the ashes of ignorance, illusion and fear.

Every television program must be a complete package in itself. No previous knowledge is to be required. There must not be even a hint that learning is hierarchical, that it is an edifice constructed on a foundation. The learner must be allowed to enter at any point without prejudice. This is why you shall never hear or see a television program begin with the caution that if the viewer has not seen the previous programs, this one will be meaningless. Television is a nongraded curriculum and excludes no viewer for any reason, at any time. In other words, in doing away with the idea of sequence and continuity in education, television undermines the idea that sequence and continuity have anything to do with thought itself.

Life is fundamentally a mental state. We live in a dream world that we create. Whose life is truer, the rational man of action pursuing practical goals of personal happiness and wealth or the philosophic man who lives in a world of theoretical and metaphysical ideas? We ascribe the value quotient to our lives by making decisions that we score as either valid or invalid based upon our personal ethics and how we think and behave.

Intelligent men do not decide any subject until they have carefully examined both or all sides of it. Fools, cowards, and those too lazy to think, accept blindly, without examination, dogmas and doctrines imposed upon them in childhood by their parents, priests, and teachers, when their minds were immature and they could not reason.

When we prefer to believe something, we may approach the relevant evidence by asking ourselves,'what evidence is there to support this belief?'...Note that this question is not unbiased: It directs our attention to supportive evidence and away from information that might contradict the desired conclusion. Because it is almost always possible to uncover some supportive evidence, the asymmetrical way we frame the question makes us overly likely to become convinced of what we hope to be true.

To irrational principles, one cannot be loyal. Ideas that are not derived from reality cannot be consistently practiced in reality.--as quoted by Leonard Peikoff in 'Objectivism: The Philosophy of Ayn Rand.

We believe certain things because they ought to be true.