Must we wait for selection to solve the problems of overpopulation, exhaustion of resources, pollution of the environment and a nuclear holocaust, or can we take explicit steps to make our future more secure? In the latter case, must we not transcend selection?

When we say that a man controls himself, we must specify who is controlling whom.

It is a mistake to suppose that the whole issue is how to free man. The issue is to improve the way in which he is controlled.

Old age is rather like another country. You will enjoy it more if you have prepared yourself before you go.

We do not choose survival as a value, it chooses us.

We admire people to the extent that we cannot explain what they do, and the word 'admire' then means 'marvel at.'

Death does not trouble me. I have no fear of supernatural punishments, of course, nor could I enjoy an eternal life in which there would be nothing left for me to do, the task of living having been accomplished.