Last year we received a GLCA New Directions Initiative grant that enabled us to get a long-considered project under way: placing the transformation of Anglo-American philosophy in the early part of the twentieth century into historical context as a way of understanding why philosophy's concern with spiritual matters was so rapidly replaced by a disciplinary attitude that was neglectful and dismissive of such concerns. The grant permitted us to study the cultural and political history of the period and to develop and team-teach a course on this theme in the fall of 2010, activities described separately in our grant report. Building on the first phase of our project, we are applying for a grant to help support our project's second phase, the actual writing of the book on this topic. We are applying for GLCA support for summer 2011 writing and research that would enable us to submit at summer's end a prospectus with two finished chapters to publishers and to complete in draft two further chapters. Our book's thesis is that Analytic Philosophy, which emerged at the beginning of the twentieth century and became the predominant philosophical voice before mid-century, did not triumph over its most prominent predecessor, Anglo-American Idealism, for purely philosophical reasons. A variety of non-philosophical factors, most significantly the repercussions of the First World War and the growing scientism in the broader culture, causally influenced these changes. Our aim is to document how these changes occurred.