Now I understand,” said the last man.

Few artists thrive in solitude and nothing is more stimulating than the conflict of minds with similar interests.

You don't believe in organized religion, yet a major theme in so many of your works seems to be a quest for God.

As our own species is in the process of proving, one cannot have superior science and inferior morals. The combination is unstable and self-destroying.

Using material ferried up by rockets, it would be possible to construct a "space station" in ... orbit. The station could be provided with living quarters, laboratories and everything needed for the comfort of its crew, who would be relieved and provisioned by a regular rocket service. (1945)

If there are any gods whose chief concern is man, they can't be very important gods.

Politicians should read science fiction, not westerns and detective stories.