The second edition of this Companion presents a philosophical perspective on an eighteenth-century phenomenon that has had a profound influence on Western culture. A distinguished team of contributors examines the writings of David Hume, Adam Smith, Thomas Reid, Adam Ferguson and other Scottish thinkers. Their subjects range across philosophy, natural theology, economics, anthropology, natural science, and law and the arts, and in addition, they relate the Scottish Enlightenment to its historical context and assess its impact and legacy. The result is a comprehensive and accessible volume that illuminates the richness, the intellectual variety and the underlying unity of this important movement. This volume contains five entirely new chapters on morality, the human mind, aesthetics, sentimentalism and political economy, and eleven other chapters have been significantly revised and updated. The book will be of interest to a wide range of readers in philosophy, theology, literature and the history of ideas.