Experience has shown that science frequently develops most fruitfully once we learn to examine the things that seem the simplest, instead of those that seem the most mysterious.

If we understood something just one way, we would not understand it at all.

An ethicist is somebody who sees something wrong with whatever you have in mind.

I cannot articulate enough to express my dislike to people who think that understanding spoils your experience... How would they know?

The principal activities of brains are making changes in themselves.

But just as astronomy succeeded astrology, following Kepler's discovery of planetary regularities, the discoveries of these many principles in empirical explorations of intellectual processes in machines should lead to a science, eventually.

One can acquire certainty only by amputating inquiry.