Our business is with life, not death.

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

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.

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

I tell my students, with a feeling of pride that I hope they will share, that the carbon, nitrogen, and oxygen that make up ninety-nine per cent of our living substance were cooked in the deep interiors of earlier generations of dying stars. Gathered up from the ends of the universe, over billions of years, eventually they came to form, in part, the substance of our sun, its planets, and ourselves. Three billion years ago, life arose upon the earth. It is the only life in the solar system.

A scientist should be the happiest of men.

A peacetime draft is the most un-American thing I know.