The most important decision we make is whether we believe we live in a friendly or hostile universe.

The more a country makes military weapons, the more insecure it becomes: if you have weapons, you become a target for attack.

I see in Nature a magnificent structure... that must fill a thinking person with a feeling of humility.

We still do not know one thousandth of one percent of what nature has revealed to us.

Be a voice not an echo.

About God, I cannot accept any concept based on the authority of the Church... As long as I can remember. I have resented mass indoctrination. I cannot prove to you there is no personal God, but if I were to speak of him, I would be a liar. I do not believe in the God of theology who rewards good and punishes evil. His universe is not ruled by wishful thinking, but by immutable laws

I wish to do something Great and Wonderful, but I must start by doing the little things like they were Great and Wonderful