It is immoral to brand children with religion. 'This is a Catholic child.' 'That is a Muslim child.' I want everyone to flinch when they hear such a phrase, just as they would if they heard, 'That is a Marxist child.'

The hypothesis of God offers no worthwhile explanation for anything, for it simply postulates what we are trying to explain.

There may be some deep questions about the cosmos that are forever beyond science. The mistake is to think they are therefore not beyond religion too.

There are sincere believers who interpret Genesis 1 and 2 in a very literal way that is inconsistent, frankly, with our knowledge of the universe's age or of how living organisms are related to each other.

Evolution has no long-term goal. There is no long-distance target, no final perfection to serve as a criterion for selection, although human vanity cherishes the absurd notion that our species is the final goal of evolution.

It is quite true that many scientists, many physicists, maintain that the physical constants, the half dozen or so numbers that physicists have to simply assume in order to derive the rest of their understanding ... have to be assumed. You can't provide a rationale for why those numbers are there. Physicists have calculated that if any of these numbers was a little bit different, the universe as we know it wouldn't exist.

You can make some inferences about a man's character if you know something about the conditions in which he has survived and prospered.