This collection is an attempt by a diverse range of authors to reignite interest in C.I. Lewis’s work within the pragmatist and analytic traditions. Although pragmatism has enjoyed a renewed popularity in the past thirty years, some influential pragmatists have been overlooked. C. I. Lewis is arguably the most important of overlooked pragmatists and was highly influential within his own time period. The volume assembles a wide range of perspectives on the strengths and weaknesses of Lewis’s contributions to metaphysics, epistemology, semantics, philosophy of science, and ethics.