A wisdom deficit - fewer elders and even fewer people who listen to them.

Reply when questioned on the safety of the polio vaccine he developed: It is safe, and you can't get safer than safe.

I speak about universal evolution and teleological evolution, because I think the process of evolution reflects the wisdom of nature. I see the need for wisdom to become operative. We need to try to put all of these things together in what I call an evolutionary philosophy of our time.

I have had dreams and I have had nightmares, but I have conquered my nightmares because of my dreams.

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

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

I feel that the greatest reward for doing is the opportunity to do more.