The Politics of Heaven and Hell makes an invaluable contribution to the understanding of classical, medieval, and modern political philosophy, while explaining the profound problem with modernity.

Christianity "freed men from the overwhelming burden of ever thinking that their salvation will ultimately come from the political order", writes Fr. James Schall, S.J. Modernity, on the other hand, is a perversion of Christianity, which tries to achieve man's salvation in this world. It does this by politicizing everything, which results in the absolute state: "The distance from the City of God to the Leviathan is not at all far once the City of God is relocated on earth."

The best defense against this tyranny is "the adequate description of the highest things, of what is beyond politics". Both reason and revelation are needed for this work, and they are eloquently and ably set forth in this book.