My faith in the expertise of physicists like Richard Feynman, for instance, permits me to endorse—and, if it comes to it, bet heavily on the truth of—a proposition that I don't understand. So far, my faith is not unlike religious faith, but I am not in the slightest bit motivated to go to my death rather than recant the formulas of physics. Watch: E doesn't equal mc2, it doesn't, it doesn't! I was lying, so there!

Words have a genealogy and it's easier to trace the evolution of a single word than the evolution of a language.

You don't get to advertise all the good that your religion does without first scrupulously subtracting all the harm it does and considering seriously the question of whether some other religion, or no religion at all, does better.

For more than a century, people have often thought that the conclusion to draw from Darwin's vision is that Homo sapiens, our species - and we're just animals too, we're just mammals - that there is nothing morally special about us. I myself don't think this follows at all from Darwin's vision, but it is certainly the received view in many quarters.

Whereas religions may serve a benign purpose by letting many people feel comfortable with the level of morality they themselves can attain, no religion holds its member to the high standards of moral responsibility that the secular world of science and medicine does!

What you can imagine depends on what you know.

The best thing about saying thank goodness in place of thank God this that here really are lots of ways of repaying your debt of goodness - by setting to create more of it, for the benefit of those to come.