Few ideas have played a more continuously prominent role throughout the history of philosophy than that of dialectic, which has figured on the philosophical agenda from the time of the Presocratics. The present book explores the philosophical promise of dialectic, especially in its dialogical version associated with disputation, debate, and rational controversy. The book's deliberations examine what lessons can be drawn to exhibit the utility of dialectical proceedings for the theory of knowledge in reminding us that the building-up of knowledge is an interpersonally interactive enterprise subject to communal standards.