"Writing, to me, is simply thinking through my fingers."

"I don't believe in an afterlife, so I don't have to spend my whole life fearing hell, or fearing heaven even more. For whatever the tortures of hell, I think the boredom of heaven would be even worse."

"People who think they know everything are a great annoyance to those of us who do."

"It is change, continuing change, inevitable change, that is the dominant factor in society today. 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."

"It takes more than capital to swing business. You've got to have the A. I. D. degree to get by - Advertising, Initiative, and Dynamics."

"Individual science fiction stories may seem as trivial as ever to the blinder critics and philosophers of today - but the core of science fiction, its essence has become crucial to our salvation if we are to be saved at all."

"Dalton's records, carefully preserved for a century, were destroyed during the World War II bombing of Manchester. It is not only the living who are killed in war."

"From my close observation of writers... they fall into two groups: 1) those who bleed copiously and visibly at any bad review, and 2) those who bleed copiously and secretly at any bad review."

"Creationists make it sound as though a 'theory' is something you dreamt up after being drunk all night."

"All sorts of computer errors are now turning up. You'd be surprised to know the number of doctors who claim they are treating pregnant men."

"Suppose that we are wise enough to learn and know - and yet not wise enough to control our learning and knowledge, so that we use it to destroy ourselves? Even if that is so, knowledge remains better than ignorance."

"Violence is the last refuge of the incompetent."

"Never let your sense of morals get in the way of doing what's right."

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

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

"And above all things, never think that you're not good enough yourself. A man should never think that. My belief is that in life people will take you at your own reckoning."

"It pays to be obvious, especially if you have a reputation for subtlety."

"The true delight is in the finding out rather than in the knowing."

"To surrender to ignorance and call it God has always been premature, and it remains premature today."

"When I read about the way in which library funds are being cut and cut, I can only think that American society has found one more way to destroy itself."

"Those people who think they know everything are a great annoyance to those of us who do."

"The saddest aspect of life right now is that science gathers knowledge faster than society gathers wisdom."

"He had read much, if one considers his long life; but his contemplation was much more than his reading. He was wont to say that if he had read as much as other men he should have known no more than other men."

"John Dalton's records, carefully preserved for a century, were destroyed during the World War II bombing of Manchester. It is not only the living who are killed in war."

"Meanwhile, fears of universal disaster sank to an all time low over the world."

"Self-education is, I firmly believe, the only kind of education there is."

"It is not only the living who are killed in war."

"I do not fear computers. I fear the lack of them."

"If knowledge can create problems, it is not through ignorance that we can solve them."

"I write for the same reason I breathe - because if I didn't, I would die."

"A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value."

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

"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."

"Life is pleasant. Death is peaceful. It's the transition that's troublesome."

"There is a single light of science, and to brighten it anywhere is to brighten it everywhere."

"I don't believe in personal immortality; the only way I expect to have some version of such a thing is through my books."

"Part of the inhumanity of the computer is that, once it is competently programmed and working smoothly, it is completely honest."

"Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition."