This volume documents the 17th M?nster Lectures in Philosophy with Susan Haack, the prominent contemporary philosopher. It contains an original, programmatic article by Haack on her overall philosophical approach, entitled The Fragmentation of Philosophy, the Road to Reintegration. In addition, the volume includes seven papers on various aspects of Haacks philosophical work as well as her replies to the papers. Susan Haack has deeply influenced many of the debates in contemporary philosophy. In her vivid and accessible way, she has made ground-breaking contributions covering a wide range of topics, from logic, metaphysics and epistemology, to pragmatism and the philosophy of science and law. In her work, Haack has always been very sensitive in detecting subtle differences. The distinctions she has introduced reveal what lies at the core of philosophical controversies, and show the problems that exist with established views. In order to resolve these problems, Haack has developed some middle-course approaches. One example of this is her famous Foundherentism, a theory of justification that includes elements from both the rival theories of Foundationalism and Coherentism. Haack herself has offered the best description of her work calling herself a passionate moderate.Chapter 1: Introduction; Julia F. G?hner, Eva-Maria Jung.- PART I: LECTURE.- Chapter 2: The Fragmentation of Philosophy, the Road to Reintegration; Susan Haack.- PART II: COLLOQUIUM.- Chapter 3: Problems at the Basis of Haacks Foundherentism; Nikolai Ruppert, Riske Schl?ter and Ansgar Seide.- Chapter 4: How Innocent is Innocent Realism? Julia F. G?hner, Tim Grafe, Yannis Krone and Johannes Ueberfeldt.- Chapter 5: Deviant Rules. On Susan Haack's The Justification of Deduction ; Sascha Bloch, Martin Pleitz, Markus Pohlmann and Jakob Wrobel.- Chapter 6: The (Dis)continuity of Philosophy Reflections on Haacks Critical Common-sensism; Christoph Fischer and Eva-Maria Jung.- Chapter 7: Lessons in Mlƒ0