A lecture is much more of a dialogue than many of you probably realize.

I do not want to believe in God. Therefore I choose to believe in that which I know is scientifically impossible, spontaneous generation leading to evolution.

Science goes from question to question; big questions, and little, tentative answers. The questions as they age grow ever broader, the answers are seen to be more limited.

I think I know what is bothering the students. I think that what we are up against is a generation that is by no means sure that it has a future.

Civilization will end within 15 or 30 years unless immediate action is taken against problems facing mankind.

We living things are a late outgrowth of the metabolism of our galaxy. The carbon that enters into our composition was cooked in a remote past in a dying star. The waters of ancient seas set the pattern of ions in our blood. The ancient atmospheres moulded our metabolism.

The trouble with most of the things that people want is that they get them.