In the history of science it has often happened that the majority was wrong and refused to listen to a minority that later turned out to be right.

In religion, you're supposed to be somehow in touch with something deep and full of mysteries.

Science is a human activity, and the best way to understand it is to understand the individual human beings who practise it. Science is an art form and not a philosophical method. The great advances in science usually result from new tools rather than from new doctrines. ... Every time we introduce a new tool, it always leads to new and unexpected discoveries, because Nature's imagination is richer than ours.

Computer models of the climate....[are] a very dubious business if you don't have good inputs.

If women are doing a Ph.D., they have a conflict between raising a family or finishing the degree, which is just at the worst time - between the ages of 25 to 30 or whatever it is. It ruins the five years of their lives.

When the great innovation appears, it will almost certainly be in muddled, incomplete and confusing form. ... For any speculation which does not at first glance look crazy, there is no hope.

Well germ warfare of course exists. There have been on a small scale... There have been, of course, a few people who got killed with anthrax right here in Princeton.