What a tragic realm this is, he reflected. Those down here are prisoners, and the ultimate tragedy is that they don't know it; they think they are free because they have never been free, and do not understand what it means.

The real origin of science fiction lay in the seventeeth-century novels of exploration in fabulous lands. Therefore Jules Verne's story of travel to the moon is not science fiction because they go by rocket but because of where they go. It would be as much science fiction if they went by rubber band.

You're - psychotic. There's something wrong with you." "I know," Benteley agreed. "I'm a sick man. And the more I see, the sicker I get. I'm so sick I think everybody else is sick and I'm the only healthy person. That's pretty bad off, isn't it?

It is futile to try to make the universe add up. But I guess we must go on anyhow.

Sometimes one must try anything, it is no disgrace. On the contrary, it is a sign of wisdom.

We are in a maze which we built, and then we fell into, now can't get out. To make the game into something real, something more than merely an intellectual exercise, we elected to lose our exceptional faculties, to reduce us an entire level. This unfortunately, includes a loss of memory.

Human has always striven to retain the past, to keep it convincing; there's nothing wicked in that. Without it we have no continuity; we have only the moment. And, deprived of the past, the moment - the present - has little meaning, if any.