The highly original contributions in this volume engage various figures, periods, geographical areas, and topics related to Arabic philosphy and logic. Most of the chapters in this collection are directly related to logic. Some of them are on issues related to the existence of the immaterial human soul, its acquisition of knowledge, and its interaction with the external world in general. A third group of articles deals with some metaphysical issues regarding the world, independently of how it is perceived by the human mind. Many of the articles included in this collection offer solutions to longstanding queries of the discipline or open up entirely new directions for future investigations.