The pain of childbirth is not remembered. It's the child that's remembered.

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.

The laws of nature are constructed in such a way as to make the universe as interesting as possible.

Climate change is part of the normal order of things, and we know it was happening before humans came.

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

Things are always more complicated than most people believe.

Successful technologies often begin as hobbies. Jacques Cousteau invented scuba diving because he enjoyed exploring caves. The Wright brothers invented flying as a relief from the monotony of their normal business of selling and repairing bicycles.