The mind, in addition to medicine, has powers to turn the immune system around.

I think of evolution as an error-making and error-correcting process, and we are constantly learning from experience.

The art of science is as important as so-called technical science. You need both. It's this combination that must be recognized and acknowledged and valued.

When things get bad enough, then something happens to correct the course. And it's for that reason that I speak about evolution as an error-making and an error-correcting process. And if we can be ever so much better - ever so much slightly better - at error correcting than at error making, then we'll make it.

Wisdom: It's something that you know when you see it. You can recognize it, you can experience it. I have defined wisdom as the capacity to make judgments that when looked back upon will seem to have been wise.

The most important question we must ask ourselves is, 'Are we being good ancestors?'

Find the right questions. You don't invent the answers, you reveal the answers.