In Volume Four, readers are exposed to the cornerstones of the early modern world, from the age of the Baroque to the art, music, and culture of the eighteenth century. As in previous volumes, the author presents lively discussion accompanied by literary excerpts and examples to illuminate a variety of topics, including Catholicism's global reach, the birth of modern philosophy, the political theories of Hobbes and Locke, the Enlightenment, and the music of Hayden and Mozart, to name a few.