If I didn't exist, I would have invented myself.

The difference between machines and human beings is that human beings can be reproduced by unskilled labour.

Science fiction does not attempt to predict. It extrapolates. It just says, "What if?" not what will be? Because you can never predict what will happen, particularly in politics and economics. You can to some extent predict in the technological sphere - flying, space travel, but even there we missed badly on some things, like computers. No one imagined the incredible impact of computers, even though robot brains of various kinds but the idea that one day every house would have a computer in every room and that one day we'd have computers built into our clothing, nobody ever thought of that.

The phenomenon of UFO doesn't say anything about the presence of intelligence in space. It just shows how rare it is here on the earth.

If man can live in Manhattan, he can live anywhere.

Every revolutionary idea seems to evoke three stages of reaction. They may be summed up by the phrases: 1- It's completely impossible. 2- It's possible, but it's not worth doing. 3- I said it was a good idea all along.

Good morning, doctors. I have taken the liberty of removing Windows 95 from my hard drive.