Isaac Asimov

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

The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That`s funny..."

I would rather not like you for telling me not to do things, than not have you around to tell me not to do things.

Man`s greatest asset is the unsettled mind.

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

There`s no merit in discipline under ideal circumstances. I`ll have it in the face of death, or it`s useless.

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

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

A moving finger having once written could never be lured back to unwrite.

For whatever the tortures of hell, I think the boredom of heaven would be even worse.

When people thought the earth was flat, they were wrong. When people thought the earth was spherical, they were wrong. But if you think that thinking the earth is spherical is just as wrong as thinking the earth is flat, then your view is wronger than both of them put together.

Was there such a thing as an instinctive yearning on the part of intelligent beings to expand outward, to reach the stars, to leave the prison of gravity behind?

To the rest of the Galaxy, if they are aware of us at all, Earth is but a pebble in the sky. To us it is home, and all the home we know.

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

In life, unlike chess, the game continues after checkmate.