This handbook introduces Human Nature and Conduct, John Dewey's groundbreaking book about moral psychology and moral philosophy, to a new generation. In his classic work, Dewey redefined impulse, habit, and intelligence: not as isolated individual traits, but as socially conditioned factors shaping human thought and action. His ultimate insight is that growth is the only moral good, and that morality is, at its core, a matter of education. Featuring contributions by leading international scholars, this volume presents expert insights into Dewey's unique psychological framework and its far-reaching impact on moral philosophy and education. The book also tackles contemporary moral dilemmas, from environmental protection and healthcare rationing to sexual liberation and religious transformation, demonstrating how Dewey's thought remains as vital today as ever.