So-called defense now absorbs sixty per cent of the national budget, and about twelve per cent of the Gross National Product.

I think all of you know there is no adequate defense against massive nuclear attack.

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.

A scientist lives with all reality. There is nothing better. To know reality is to accept it, and eventually to love it.

There is nothing worth having that can he obtained by nuclear war - nothing material or ideological - no tradition that it can defend. It is utterly self-defeating.

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.