The sky calls to us. If we do not destroy ourselves, we will one day venture to the stars.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

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

Think of how many religions attempt to validate themselves with prophecy. Think of how many people rely on these prophecies, however vague, however unfulfilled, to support or prop up their beliefs. Yet has there ever been a religion with the prophetic accuracy and reliability of science? ... No other human institution comes close.

Dwell on the beauty of life. Watch the stars, and see yourself running with them.

Moonlight drowns out all but the brightest stars.