Thanks to their heterogeneity, the nine essays in this volume offer a clear testimony of Donald Davidson's authority, and they undoubtedly show how much his work - even if it has raised many doubts and criticisms - has been, and still is, highly influential and significant in contemporary analytical philosophy for a wide range of subjects. Moreover, the various articles not only critically and carefully analyze Davidson's theses and arguments (in particular those concerning language and knowledge), but they also illustrate how such theories and ideas, despite their unavoidable difficulties, are still alive and potentially fruitful. Davidon's work is indeed an important and provocative starting point for discussing the future progress of philosophy.