Reviewing Samuel Gregg’s new book, Reason, Faith, and the Struggle for Western Civilization, TCT’s editor-in-chief notes how Gregg describes how the Enlightenment’s attack on Judeo-Christian tradition resulted not only in the French Revolution’s Terror, but subsequent anti-Western ideologies such as Communism and National Socialism—just a few of the “pathologies of reason” stemming from the West’s divorce from religious principles.