If people destroy something replaceable made by mankind, they are called vandals; if they destroy something irreplaceable made by God, they are called developers.

The most important part of our lives-our sensations, emotions, desires, and aspirations-takes place in a universe of illusions which science can attenuate or destroy, but which it is powerless to enrich.

When, in the present world, men behave well, that is no doubt sometimes because they are creatures of habit as well as, sometimes, because they are reasonable.

We have not merely escaped from something but into something... We have joined the greatest of all communities, which is not that of man alone but of everything which shares with us the great adventure of being alive.

The famous balance of nature is the most extraordinary of all cybernetic systems. Left to itself, it is always self-regulated.

Though we face the facts of sex we are more reluctant than ever to face the fact of death or the crueler facts of life, either biological or social.

Cats seem to go on the principle that it never does any harm to ask for what you want.