I will not be afraid because I understand ... And understanding is happiness.

Even by the twenty-second century, no way had yet been discovered of keeping elderly and conservative scientists from occupying crucial administrative positions. Indeed, it was doubted if the problem ever would be solved.

Overhead, without any fuss, the stars were going out.

Science can destroy religion by ignoring it as well as by disproving its tenets. No one ever demonstrated, so far as I am aware, the nonexistence of Zeus or Thor, but they have few followers now.

When you finally understand the universe, it will not only be stranger than you imagine, it will be stranger than you can imagine.

All explorers are seeking something they have lost. It is seldom that they find it, and more seldom still that the attainment brings them greater happiness than the quest.

He found it both sad and fascinating that only through an artificial universe of video images could she establish contact with the real world.