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.

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.

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

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

I am not a speed reader. I am a speed understander.

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.

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.

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.

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.

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

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.

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.

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

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.

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.

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

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

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

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

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

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.

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

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

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

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

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

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.

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

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

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

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

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

If my doctor told me I had only six minutes to live, I wouldn't brood. I'd type a little faster.

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.

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.

Violence is the last refuge of the incompetent.

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

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.

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

There is a cult of ignorance in the United States, and there has always been. 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.

Never let your sense of morals prevent you from doing what is right.

The stars, like dust, encircle me In living mists of light; And all of space I seem to see In one vast burst of sight.

Properly read the Bible is the most potent force for atheism ever conceived.

Human beings sometimes find a kind of pleasure in nursing painful emotions in blaming themselves without reason or even against reason.

Boasts are wind and deeds are hard.

The human brain then is the most complicated organization of matter that we know.

I write for the same reason I breathe because if I didnt I would die.