Miguel de Unamuno, perhaps the most influential author of modern Spain, wrote his Treatise on Love of God at the height of his career after suffering a crisis of religious faith. Like Saint Augustine's Confessions and much of Kierkegaard, the Treatise is a study of religious inwardness and proposes to analyze how God can be found within as a beloved person. Not content with simple introspection, Unamuno considers Church fathers such as Athanasius,...