You can't go five steps in any direction in the world of classical education, Christian cultural studies, "modernity surgery," or conservative philosophy without bumping into the claim that "Martin Luther was a father of secularity." Though I think this is patently absurd from even a casual reading of Luther's most important works, I can see why there are concerns even from Protestants. Luther was trained by nominalists, called reason the devil's whore, and hated most philosophy with a vengeance. Is there anything in the metaphysical side of Luther that can rescue his reputation as a rejector of the Great Tradition? This much-needed book answers that question splendidly. It's more than an account of just Luther's aesthetics—it's a brief but heady survey of his entire philosophy (if that word is appropriate to describe Luther). It's already been a serious challenge to many of the ways in which I'm accustomed to thinking from my diet of the neo-Thomists and Radically Orthodox: namely, Mattes critiques a Platonic view of reality as participation in God's essence, as well as the Augustinian emphasis on desire. Though this sounds like a serious rejection, his elucidation of Luther's response is brilliant, and has led me to think that it is the most Biblical account of reality. I'll have to put some more thought into it in order to give a totally fair assessment. Maybe once I've read more Aquinas, Scotus, Ockham, Calvin, and some of the recent thinkers he cites (one area of concern is his Francis Schaeffer-esque characterization of Aquinas as a bifurcator of nature and grace). But for now, I was impressed with the analysis and argumentation. It's a must-own for Lutheran scholars, and really anyone interested in Christian aesthetics and philosophy. It illuminates all the Lutheran distinctives really well, and it might just serve as a helpful introduction to Lutheran theology for intellectuals.