This monography adds a new dimension to the traditional view of Humboldt by providing a survey of his life-long interest in literature and literary theory. Isolated aspects of this interest have been previously investigated, but this is the first attempt to draw a comprehensive picture of his activity in the field of literary criticism. By identifying and outlining his central ideas, principles and opinions, this study presents the entire spectrum of his concern with literary matters and thereby establishes the larger framework and perspective for later, much needed investigations.