Nuclear weapons offer us nothing but a balance of terror, and a balance of terror is still terror.

I tell my students to try early in life to find an unattainable objective.

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

Our challenge is to give what account we can of what becomes of life in the solar system, this corner of the universe that is our home; and, most of all, what becomes of men-all men, of all nations, colors, and creeds. This has become one world, a world for all men. It is only such a world that can now offer us life, and the chance to go on.

We've committed many war crimes in Vietnam - but I'll tell you something interesting about that. We were committing war crimes in World War II, before the Nuremberg trials were held and the principle of war crimes was stated.

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

A scientist is in a sense a learned small boy. There is something of the scientist in every small boy. Others must outgrow it. Scientists can stay that way all their lives.