The aim of this volume is to collect papers that situate, discuss and critically asses David Armstrongs contributions. The book is organized in three parts. In Section I: iAnalytical Metaphysics and Its Methodology/i, certain basic principles of analytic metaphysics advocated by Armstrong and their consequences are critically examined. The articles of Section II: iLaws of Nature, Dispositions, and Modality/i, study the constraints Armstrongs naturalism sets to his ontology of modality, laws and dispositions. Finally, the articles of Section III: iMind and Epistemology/i, study and critically evaluate Armstrongs contributions in epistemology, the philosophy of perception and color.