Any teacher that can be replaced by a computer should be replaced by a computer.

The appearance of strength is all about you. It would seem to last forever. However... the rotten tree-trunk, until the very moment when the storm-blast breaks it in two, has all the appearance of might it ever had. The storm-blast whistles through the branches of the Empire even now. Listen... and you will hear the creaking.

There is no right to deny freedom to any object with a mind advanced enough to grasp the concept and desire the state. -(from "The Bicentennial Man) story)

Life would be impossible on such a planet. It wouldn't get enough heat and light, and if it rotated there would be total darkness half of every day. There wouldn't be any native inhabitants. You couldn't expect life - which is fundamentally dependent on light - to develop under such extreme conditions of light deprivation. Half of every axial rotation spent in Darkness! No, nothing could exist under conditions like that.

When asked for advice by beginners. Know your ending, I say, or the river of your story may finally sink into the desert sands and never reach the sea.

Of course there are worlds. Millions of them! Every star you see has worlds, and most of those you don't see.

I am not responsible for what other people think. I am responsible only for what I myself think, and I know what that is. No idea I've ever come up with has ever struck me as a divine revelation. Nothing I have ever observed leads me to think there is a God watching over me.