In childhood our credulity serves us well. It helps us to pack, with extraordinary rapidity, our skulls full of the wisdom of our parents and our ancestors. But if we don't grow out of it in the fullness of time, our ... nature makes us a sitting target for astrologers, mediums, gurus, evangelists, and quacks. We need to replace the automatic credulity of childhood with the constructive skepticism of adult science.

Faith is belief without evidence and reason; coincidentally that's also the definition of delusion.

I think we certainly benefit from social institutions which encourage us towards moral behavior. It's very important to have law. It's very important to have a moral education.

To describe religions as mind viruses is sometimes interpreted as contemptuous or even hostile. It is both. I am often asked why I am so hostile to organized religion.

Theologians will protest that the story of Abraham sacrificing Issac should not be taken as literal fact. And the appropriate response is twofold: first, many, many people even to this day, do take the whole of their Scripture to be literal fact, and they have a great deal of political power over the rest of us, especially in the United States and in the Islamic world. Second, if not of literal fact, how should we take the story? As an alagory? Then an alagory for what? Surely, nothing praiseworthy. As a moral lesson? But what kind of morals could one derive from this appalling story?

I think what I'd really like to see would be a mass consciousness-raising movement so that we would all become vegetarian.

Science shares with religion the claim that it answers deep questions about origins, the nature of life, and the cosmos. But there the resemblance ends. Scientific beliefs are supported by evidence, and they get results. Myths and faiths are not and do not.