Are we being good ancestors?

Life is an error-making and an error-correctin g process, and nature in marking man's papers will grade him for wisdom as measured both by survival and by the quality of life of those who survive.

There is no such thing as failure, there's just giving up too soon.

I'm saying that we should trust our intuition. I believe that the principles of universal evolution are revealed to us through intuition. And I think that if we combine our intuition and our reason, we can respond in an evolutionary sound way to our problems.

When you inoculate children with a polio vaccine, you don't sleep well for two or three months.

My life is pretty well at peace, and the profession is more of an avocation. It's a calling, if you like, rather than a job. I do what I feel impelled to do, as an artist would.

Intuition will tell the thinking mind where to look next.