At war or at peace, more people die of unenlightened self-interest than of any other disease.

One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.

A science fiction story is one which presupposes a technology, or an effect of technology, or a disturbance in the natural order, such as humanity, up to the time of writing, has not in actual fact experienced.

[Science fiction is] the attempt to deal rationally with alternate possibilities in a manner which will be entertaining.

“Science is my territory, but science fiction is the landscape of my dreams.”

That’s all science fiction was ever about. Hating the way things are, wanting to make things different.

I am constantly amazed by how much stranger science is than science fiction.

Do it for yourself. The universe will be around to collect its cut later.

Science fiction encourages us to explore… all the futures, good and bad, that the human mind can envision.

Anything you dream is fiction, and anything you accomplish is science, the whole history of mankind is nothing but science fiction.

…Science-Fiction, in which the revealed truths of Science may be given, interwoven with a pleasing story which may itself be poetical and true.

Science fiction isn’t just thinking about the world out there. It’s also thinking about how that world might be—a particularly important exercise for those who are oppressed, because if they’re going to change the world we live in, they—and all of us—have to be able to think about a world that works differently.