I have come to recognize evolution not only as an active process that I am experiencing at the time, but as something I can guide by the choices I make.

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.

My job is to help people see what I see. If it's of value, fine. And, if it's not of value, then at least I've done what I can do.

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

A good parent gives their child roots and wings.

I see the triumph of good over evil as a manifestation of the error-correcting process of evolution.

If all the insects were to disappear from the earth, within 50 years all life on earth would end. If all human beings disappeared from the earth, within 50 years all forms of life would flourish.