I agree that you might clone some people who would look amazingly like their parental cell donors, but the odds are that they'd be almost as different as you or me, and certainly more different than any of today's identical twins.

Ants are so much like human beings as to be an embarrasment...They do everything but watch television.

The overwhelming astonishment, the queerest structure we know about so far in the whole universe, the greatest of all cosmological scientific puzzles, confounding all our efforts to comprehend it, is the earth.

The central task of science is to arrive, stage by stage, at a clearer comprehension of nature, but this does not at all mean, as it is sometimes claimed to mean, a search for mastery over nature.

It's just plain learning something that you didn't know. There is a real aesthetic experience in being dumbfounded.

I don't think that the permanence of the individual human soul is an indispensable part of religious thought.

Most things get better by themselves. Most things, in fact, are better by morning.