The Three Theorems of Psychohistorical Quantitivity: The population under scrutiny is oblivious to the existence of the science of Psychohistory. The time periods dealt with are in the region of 3 generations. The population must be in the billions (±75 billions) for a statistical probability to have a psychohistorical validity.

Rejection slips, or form letters, however tactfully phrased, are lacerations of the soul, if not quite inventions of the devil-but there is no way around them.

Science fiction writers foresee the inevitable, and although problems and catastrophes may be inevitable, solutions are not.

No sensible decision can be made any longer without taking into account not only the world as it is, but the world as it will be.

The lucky few who can be involved in creative work of any sort will be the true elite of mankind, for they alone will do more than serve a machine.

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.

The intelligent man is never bored.