To speak specifically of our problem with the Muslim world, we are meandering into a genuine clash of civilizations, and we're deluding ourselves with euphemisms. We're talking about Islam being a religion of peace that's been hijacked by extremists. If ever there were a religion that's not a religion of peace, it is Islam.

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.

Where we have reasons for what we believe, we have no need of faith; where we have no reasons, we have lost both our connection to the world and to one another.

Nothing guarantees that reasonable people will agree about everything, of course, but the unreasonable are certain to be divided by their dogmas. It is time we recognized that this spirit of mutual inquiry, which is the foundation of all real science, is the very antithesis of religious faith.

The only thing that permits human beings to collaborate with one another in a truly open-ended way is their willingness to have their beliefs modified by new facts. Only openness to evidence and argument will secure a common world for us.

The moral landscape is the framework I use for thinking about questions of morality and human values in universal terms.

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.