David Mamet's provocative new book, The Secret Knowledge: On the Dismantling of American Culture, explores in greater length and considerably greater depth the themes he announced in his 2008 op-ed for the Village Voice, "Why I Am No Longer a 'Brain-Dead Liberal.'" It comes complete with a bibliography of 117 books listing virtually every work relating to his topic. The bibliography -- and Mamet's explication of the issues involved in his turn to conservatism -- is particularly impressive since Mamet says he "never knowingly talked with nor read the works of a Conservative before moving to Los Angeles, some eight...