Risks, I like to say, always pay off. You learn what to do, or what not to do.

I have the impression that the new generation of young people, are coming up on the scene with a sense "ancestorhood", and with more wisdom than was evident before.

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

It is possible to create an epidemic of health which is self-organizing and self-propelling.

It is always with excitement that I wake up in the morning wondering what my intuition will toss up to me, like gifts from the sea. I work with it and rely on it. It's my partner.

Are we being good ancestors?

I couldn't possibly have become a member of this Institute, you know, if I hadn't organized it myself.