Your dreams tell you what to do; your reason tells you how to do it.

Life is an error-making and an error-correcting process.

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.

The worst tragedy that could have befallen me was my success. I knew right away that I was through - cast out.

As a child I was not interested in science. I was merely interested in things human, the human side of nature, if you like, and I continue to be interested in that. That's what motivates me.

Your dreams tell you what to do; your reason tells you how to do it.

Nothing happens quite by chance. It's a question of accretion of information and experience.