Realistic' is a loaded word for me. Anyone who uses the word 'realistic' is all bad.

At that time a senator who was on the Joint Committee of Atomic Energy said rather quietly, 'You know, we're having a little problem with waste these days.' I didn't know what he meant then, but I know now.

Understanding how DNA transmits all it knows about cancer, physics, dreaming and love will keep man searching for some time.

You don't have a conservation policy unless you have a population policy.

I don't think we have very good records about what they were thinking except, as I pointed out earlier today, that they did invent our political system.

While the death of young men in war is unfortunate, it is no more serious than the touching of mountains and wilderness areas by humankind.

I believe that the average guy in the street will give up a great deal, if he really understands the cost of not giving it up. In fact, we may find that, while we're drastically cutting our energy consumption, we're actually raising our standard of living.