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

So the universe is not quite as you thought it was. You'd better rearrange your beliefs, then. Because you certainly can't rearrange the universe.

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

My feeling is, quite simply, that if there is a God, He has done such a bad job that he isn't worth discussing.

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

During the century after Newton, it was still possible for a man of unusual attainments to master all fields of scientific knowledge. But by 1800, this had become entirely impracticable.

Any system which allows men to choose their own future will end by choosing safety and mediocrity, and in such a Reality the stars are out of reach.