One, a robot may not injure a human being, or through inaction, allow a human being to come to harm;
Two, a robot must obey the orders given it by human beings except where such orders would conflict with the First Law; Three, a robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.

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

I'm not a speed reader. I'm a speed understander.

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.

Violence is the diplomacy of the incompetent.

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

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

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

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

The three fundamental Rules of Robotics...One: a robot may not injure a human being, or, through inaction, allow a human being to come to harm...Two:..a robot must obey the orders given it by human beings except where such orders would conflict with the First Law...Three: a robot must protect its own existence as long as such protection does not conflict with the First and Second Laws.

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

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

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

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

Science can be introduced to children well or poorly. If poorly, children can be turned away from science; they can develop a lifelong antipathy; they will be in a far worse condition than if they had never been introduced to science at all.

Violence is the last refuge of the incompetent.

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

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 most hopelessly stupid man is he who is not aware that he is wise.