The Oxford Philosophical Texts series consists of authoritative teaching editions of canonical texts in the history of philosophy from the ancient world down to modern times. Each volume provides a clear, well laid out text together with a comprehensive introduction by a leading specialist, giving the student detailed critical guidance on the intellectual context of the work and the structure and philosophical importance of the main arguments. Endnotes are supplied which provide further commentary on the arguments and explain unfamiliar references and terminology, and a full bibliography and index are also included. The series aims to build up a definitive corpus of key texts in the Western philosophical tradition, which will form a reliable and enduring resource for students and teachers alike. Shortly before his death, David Hume declared his Enquiry concerning the Principles of Morals (1751) to be the best of his many writings. In this highly influential work, Hume sets out his theory of justice and benevolence, and the other virtues, and argues that morality is founded on the natural feelings or `sentiments' of humankind. The text printed in this edition is that of the Clarendon critical edition of Hume's works. A substantial introduction by the editor explains the intellectual background to the work and its relationship to the rest of Hume's philosophy. The volume also includes detailed explanatory notes on the text, a glossary of terms, a full list of references, and a section of supplementary readings.