The prediction I can make with the highest confidence is that the most amazing discoveries will be the ones we are not today wise enough to foresee.

Science is a way to not fool ourselves.

If we offer too much silent assent about mysticism and superstition - even when it seems to be doing a little good - we abet a general climate in which scepticism is considered impolite, science tiresome, and rigorous thinking somehow stuffy and inappropriate.

Science is not only compatible with spirituality; it is a profound source of spirituality.

Books are key to understanding the world and participating in a democratic society.

All of the rocky and metallic material we stand on, the iron in our blood, the calcium in our teeth, the carbon in our genes were produced billions of years ago in the interior of a red giant star. We are made of star stuff.

We can judge our progress by the courage of our questions and the depth of our answers, our willingness to embrace what is true rather than what feels good.