Some things, the more you understand the more you loathe them.

The faith in which I was brought up assured me that I was better than other people; I was saved, they were damned.... Our hymns were loaded with arrogance - self-congratulation on how cozy we were with the Almighty and what a high opinion he had of us, what hell everybody else would catch come Judgment Day.

And suddenly I knew I was people and could not stop laughing.

When a place gets crowded enough to require ID's, social collapse is not far away. It is time to go elsewhere. The best thing about space travel is that it made it possible to go elsewhere.

A generation which ignores history has no past — and no future.

If it can't be expressed in figures, it is not science; it is opinion. It has long been known that one horse can run faster than another - but which one? Differences are crucial.

A zest for living must include a willingness to die.