Joseph Butler's Fifteen Sermons (1726) is a classic work of moral philosophy, widely influential ever since. The topics Butler discusses include the role of conscience in human nature, self-love and egoism, compassion, resentment and forgiveness, love of our neighbour and of God. The text of the second edition of the Sermons is here presented together with a selection of Butler's other ethical writings: the Dissertation of the Nature of Virtue, a sermon on hypocrisy and liberty preached before the House of Lords, and relevant extracts from his correspondence with Samuel Clarke. David McNaughton contributes a substantial historical and philosophical introduction to help readers understand these works and see their continuing importance. While it is a readers' edition which avoids the clutter of textual variants and intrusive footnotes, it comes complete with scholarly apparatus intended to aid the reader in studying Butler's work in depth. McNaughton also includes short summaries of Butler's predecessors, and a selective bibliography. This will be the definitive resource for anyone interested in Butler's moral philosophy.