I have said that science is impossible without faith. ... Inductive logic, the logic of Bacon, is rather something on which we can act than something which we can prove, and to act on it is a supreme assertion of faith ... Science is a way of life which can only fluorish when men are free to have faith.

We have modified our environment so radically that we must now modify ourselves to exist in this new environment.

What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.

If the human being is condemned and restricted to perform the same functions over and over again, he will not even be a good ant, not to mention a good human being.

Scientific discovery consists in the interpretation for our own convenience of a system of existence which has been made with no eye to our convenience at all.

The world of the future will be an even more demanding struggle against the limitations of our intelligence, not a comfortable hammock in which we can lie down to be waited upon by our robot slaves.

Any useful logic must concern itself with Ideas with a fringe of vagueness and a Truth that is a matter of degree.