This volume breaks new ground by bringing together a great variety of innovative contributions on triangulation, epistemology, and mind. The notion of "triangulation," developed by Donald Davidson (1917-2003) during the last two decades of his life, has changed our understanding of the relationship between subjective, intersubjective, and objective, and shed new light on concepts such as externalism, internalism, communication, interpretation, and language. At the same time, however, it has been strongly criticized for several reasons. The papers collected in this volume--written by established contributors--aim to provide new insights into the contemporary debate on triangulation. The upshot is not only a deeper understanding of Davidson's ideas, but also a new appreciation of some central problems of epistemology and the philosophy of mind with regard to adjoining disciplines such as cognitive sciences and the philosophy of language.