Science has nothing to be ashamed of even in the ruins of Nagasaki. The shame is theirs who appeal to other values than the human imaginative values which science has evolved.

No science is immune to the infection of politics and the corruption of power.

That is the essence of science: ask an impertinent question, and you are on the way to a pertinent answer.

Knowledge is an unending adventure at the edge of uncertainty.

Every animal leaves traces of what it was; man alone leaves traces of what he created.

You will die but the carbon will not; its career does not end with you. It will return to the soil, and there a plant may take it up again in time, sending it once more on a cycle of plant and animal life.

We are all afraid for our confidence, for the future, for the world. That is the nature of the human imagination. Yet every man, every civilization, has gone forward because of its engagement with what it has set itself to do.