It’s a poor atom blaster that won’t point both ways.

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.

The strain of anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that "my ignorance is just as good as your knowledge."

The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'

[Social] science fiction is that branch of literature which is concerned with the impact of scientific advance on human beings.

To insult someone we call him 'bestial. For deliberate cruelty and nature, 'human' might be the greater insult.

Radiation, unlike smoking, drinking, and overeating, gives no pleasure, so the possible victims object.