The jester is brother to the sage.

Courage is never to let your actions be influenced by your fears.

One should either write ruthlessly what one believes to be the truth, or else shut up.

The principle mark of genius is not perfection but originality, the opening of new frontiers.

The story of the Khazar Empire, as it slowly emerges from the past, begins to look like the most cruel hoax which history has ever perpetrated.

Nothing is more sad than the death of an illusion.

Politics can be relatively fair in the breathing spaces of history; at its critical turning points there is no other rule possible than the old one, that the end justifies the means.

Creativity is a type of learning process where the teacher and pupil are located in the same individual.

In any language it is a struggle to make a sentence say exactly what you mean.

I believe that the evidence for telepathy is overwhelming and that it is a part of reality that is above science. Science allows us to glimpse [only] fragments of reality.

Brain-washing starts in the cradle.

Sometimes the things that happen aren't as important as the things you remember.

There is nothing left but the attempt and not trying is the same as failing.

Tell the truth, work hard, and come to dinner on time.

Happiness, contentment, the health and growth of the soul, depend, as men have proved over and over again, upon some simple issue, some single turning of the soul.

I am shamelessly biased about the people in my life, and it makes sense to me that other people are the same.

The other one I did was "I, Robot." I take apart Isaac Asimov's Robots world.

The most important discoveries will provide answers to questions that we do not yet know how to ask and will concern objects we have not yet imagined.

The last man! Yes I may well describe that solitary being's feelings, feeling myself as the last relic of a beloved race, my companions extinct before me.

I've heard that sometimes farmers out in the field ... hear voices.

Reciting lines is hard; making stuff up is much, much easier.