No matter how much knowledge and wisdom you acquire during your life, not one jot will be passed on to your children by genetic means. Each new generation starts from scratch.

Although atheism might have been logically tenable before Darwin, Darwin made it possible to be an intellectually fulfilled atheist.

All life evolves by the differential survival of replicating entities.

All qualified physicists, biologists, cosmologists and geologists agree, on the basis of massive, mutually corroborating evidence, that the earth's age is at least four billion years.

If the history-deniers who doubt the fact of evolution are ignorant of biology, those who think the world began less than ten thousand years ago are worst than ignorant, they are the deluded to the point of perversity.

As long as we accept the principle that religious faith must be respected simply because it is religious faith, it is hard to withhold respect from the faith of Osama bin Laden and the suicide bombers

They are either people of faith who have lost their faith from reading my books, or they are people who had already lost their faith, and something about my books encouraged them to affirm that.