"Augustine’s importance to the subsequent history of Europe is impossible to exaggerate. His political theory, which is all we focus on here, was a very small part of what he wrote in some 113 books and innumerable letters and sermons. Nonetheless, it is pregnant with arguments that racked not only Christian Europe but the modern world: how seriously should a Christian with his eyes on eternity take the politics of this earthly life; is it the duty of the state to protect the church, repress heresy, and ensure that its citizens adhere to the one true faith; absent a Christian ruler, are we absolved of the duty to obey our rulers, or must we follow Saint Paul’s injunction to “obey the powers that be”? More generally, Augustine articulated distinctive and long-lived thoughts on matters that remain controversial: the nature of just war, the illegitimacy of the death penalty, the limits of earthly justice. The fact that his views on all these matters were embedded in a theology of some bleakness does not mean that they do not survive on their own merits. One needs only the barest sympathy with the thought that we are fallen creatures to find many of his views deeply appealing, far from cheerful as they may be."