Science is a way to not fool ourselves.

Human beings have a demonstrated talent for self-deception when their emotions are stirred.

Except for fools and madmen, everyone knows that nuclear war would he an unprecedented human catastrophe.

I would love to believe that when I die I will live again, that some thinking, feeling, remembering part of me will continue.

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.

People are not stupid. They believe things for reasons. The last way for skeptics to get the attention of bright, curious, intelligent people is to belittle or condescend or to show arrogance toward their beliefs.

The significance of our lives and our fragile planet is then determined only by our own wisdom and courage. We are the custodians of life's meaning. We long for a Parent to care for us, to forgive us our errors, to save us from our childish mistakes. But knowledge is preferable to ignorance. Better by far to embrace the hard truth than a reassuring fable. If we crave some cosmic purpose, then let us find ourselves a worthy goal.