“If our well-being depends upon the interaction between events in our brains and events in the world, and there are better and worse ways to secure it, then some cultures will tend to produce lives that are more worth living than others; some political persuasions will be more enlightened than others; and some world views will be mistaken in ways that cause needless human misery.”

“If we cannot find our way to a time when most of us are willing to admit that, at the very least, we are not sure whether or not God wrote some of our books, then we need only count the days to Armageddon—because God has given us far many more reasons to kill one another than to turn the other cheek.”

“Most moral relativists believe that tolerance of cultural diversity is better, in some important sense, than outright bigotry. This may be perfectly reasonable, of course, but it amounts to an overarching claim about how all human beings should live. Moral relativism, when used as a rationale for tolerance of diversity, is self-contradictory.”

“By lying, we deny others a view of the world as it is. Our dishonesty not only influences the choices they make, it often determines the choices they can make—and in ways we cannot always predict. Every lie is a direct assault upon the autonomy of those we lie to.”

“What we do in every other area of our lives (other than religion), is, rather than respect somebody's beliefs, we evaluate their reasons.”

“In adaptive terms, belief has been extraordinarily useful. It is, after all, by believing various propositions about the world that we predict events and consider the likely consequences of our actions. Beliefs are principles of action: whatever they may be at the level of the brain, they are processes by which our understanding (and misunderstanding) of the world is represented and made available to guide our behavior.”

“How can we be “free” as conscious agents if everything that we consciously intend is caused by events in our brain that we do not intend and of which we are entirely unaware? We can’t.”