Richard Carrier, Ph.D., is a philosopher and historian of antiquity, specializing in contemporary philosophy of naturalism and Greco-Roman philosophy, science, and religion, including the origins of Christianity. He blogs regularly and lectures for community groups worldwide. He is the author of Sense and Goodness without God: A Defense of Metaphysical Naturalism, Proving History: Bayes's Theorem and the Quest for the Historical Jesus, Why I Am Not a Christian: Four Conclusive Reasons to Reject the Faith, and Not the Impossible Faith: Why Christianity Didn't Need a Miracle to Succeed, as well