Violence seems to have permeated every dimension of our common life and every dimension of our imagination, and political leaders are putting it to political use, mobilizing fear and thus skewing policy and practice. Theological teachers and preachers must respond credibly to this public reality. Jonathan Sacks, the former chief rabbi of the United Hebrew Congregations of the British Common­wealth, has made a wise and important response.

Sacks begins his book with a large-scale analysis of public violence and its roots. He observes that in the 17th century the rise of Enlightenment rationality and its attendant ethos of tolerance, which transcended national sectarianism, permitted the promulgation of the Treaty of Westphalia. Thus a rough peace was guaranteed by secularization. More recently, however, that secularization has diminished in authority, so “religious violence” has been able to reemerge with immense energy.

But so-called religious violence is not rooted in religion, and religion has nothing to do with generating it. Rather, Sacks suggests, the source of violence is found in a dualism that separates “us” from “them,” in Manichaean fashion, and that freely treats “them” with hostility and hatred.