Flavius Claudius Julianus was the last pagan to sit on the Roman imperial throne (361-363). Born in Constantinople in 331 or 332, Julian was raised as a Christian, but apostatized, and during his short reign tried to revive paganism, which, after the conversion to Christianity of his uncle Constantine the Great early in the fourth century, began losing ground at an accelerating pace. Having become an orphan when he was still very young, Julian was taken care of by his cousin Constantius II, one of Constantine's sons, who permitted him to study rhetoric and philosophy and even made him...