How often people speak of art and science as though they were two entirely different things, with no interconnection. That is all wrong. The true artist is quite rational as well as imaginative and knows what he is doing; if he does not, his art suffers. The true scientist is quite imaginative as well as rational, and sometimes leaps to solutions where reason can follow only slowly; if he does not, his science suffers.

Emotionally I am an atheist. I don't have the evidence to prove that God doesn't exist, but I so strongly suspect he doesn't that I don't want to waste my time.

If a conclusion is not poetically balanced, it cannot be scientifically true.

The greatest weapons in the conquest of knowledge are an understanding mind and the inexorable curiosity that drives it on.

Any system which allows men to choose their own future will end by choosing safety and mediocrity, and in such a Reality the stars are out of reach.

What I will be remembered for are the Foundation Trilogy and the Three Laws of Robotics. What I want to be remembered for is no one book, or no dozen books. Any single thing I have written can be paralleled or even surpassed by something someone else has done. However, my total corpus for quantity, quality and variety can be duplicated by no one else. That is what I want to be remembered for.

Having no unusual coincidence is far more unusual than any coincidence could possibly be.