Take a moment to reflect upon the existence of the musical The Book of Mormon. Now imagine the security precautions that would be required to stage a similar production about Islam. The project is unimaginable—not only in Beirut, Baghdad, or Jerusalem, but in New York City.

Some propositions are so dangerous that it may even be ethical to kill people for believing them.

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

Ten years have now passed since many of us first felt the jolt of history-when the second plane crashed into the South Tower of the World Trade Center. We knew from that moment that things can go terribly wrong in our world-not because life is unfair, or moral progress impossible, but because we have failed, generation after generation, to abolish the delusions of our ignorant ancestors.

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.

To say that I would have done otherwise had I wanted to is simply to say that I would have lived in a different universe had I been in a different universe.

We are faced with the task of convincing a myth infatuated world that love and curiosity are sufficient and you don't have to delude yourself and frighten yourself with Iron Age fairy tales. This is a monumental task. I don't think there is an intellectual struggle more worthy of our efforts.