The excitement of learning separates youth from old age. As long as you’re learning, you’re not old.

The failure of women to have reached positions of leadership has been due in large part to social and professional discrimination. In the past, few women have tried, and even fewer have succeeded.

I wasn't handed college or graduate school or anything else on a silver platter. I had to work very hard, but I did it because I wanted to. That's the real key to happiness. I think unhappy people are those who feel that circumstances are forcing them into a pattern. Happy people are not slaves to the system.

Man himself is a mysterious object, and the tools to probe his physiologic nature and function have developed only slowly through the millennia.

Everything's a real passion to me - my children, my family, my work, travel. I don't play tennis, I don't play music, but I have a great time.

Initially, new ideas are rejected. Later they become dogma if you're right. And if you're really lucky, you can publish your rejections as part of your Nobel presentation.