The values by which we are to survive are not rules for just and unjust conduct, but are those deeper illuminations in whose light justice and injustice, good and evil, means and ends are seen in fearful sharpness of outline.

Astronomy is not the apex of science or of invention. But it is a test of the cast of temperament and mind that underlies a culture.

The most powerful drive in the ascent of man is his pleasure in his own skill. He loves to do what he does well. And having done it well, he loves to do it better.

The largest single step in the ascent of man is the change from nomad to village agriculture.

We are a scientific civilization. That means a civilization in which knowledge and its integrity are crucial. Science is only a Latin word for knowledge ... Knowledge is our destiny.

The richness of human life is that we have many lives, we live the events that do not happen (and some that cannot) as vividly as those that do, and if thereby we die a thousand deaths, that is the price we pay...

The world today is made, it is powered by science; and for any man to abdicate an interest in science is to walk with open eyes towards slavery.