It is in the long run essential to the growth of any new and high civilization that small groups of men can escape from their neighbors and from their government, to go and live as they please in the wilderness. A truly isolated, small, and creative society will never again be possible on this planet.

The progress of science requires the growth of understanding in both directions, downward from the whole to the parts and upward from the parts to the whole. A reductionist philosophy, arbitrarily proclaiming that the growth of understanding must go only in one direction, makes no scientific sense. Indeed, dogmatic philosophical beliefs of any kind have no place in science.

Technology must be guided and driven by ethics if it is to do more than provide new toys for the rich.

I am hoping that the scientists and politicians who have been blindly demonizing carbon dioxide for 37 years will one day open their eyes and look at the evidence.

There is a great satisfaction in building good tools for other people to use.

Humanity looks to me like a magnificent beginning but not the final word.

Science and religion are, of course, two different ways of looking at the universe; and it's the same universe with two different windows.