Historians will have to face the fact that natural selection determined the evolution of cultures in the same manner as it did that of species.

Natural selection does not give any preference at all to anything that, in the long run, could be advantageous for the species but blindly rewards everything that, momentarily, affords greater procreative success.

I see the creative accomplishments of which highly gifted humans are capable as special cases of the universal creative process, that game played by everyone against everyone else, from which wells up all that has never been before.

The fidelity of a dog is a precious gift demanding no less binding moral responsibilities than the friendship of a human being.

Just thinking that my dog loves me more than I love him, I feel shame.

Most people have forgotten how to live with living creatures, with living systems and that, in turn, is the reason why man, whenever he comes into contact with nature, threatens to kill the natural system in which and from which he live.

It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.