the examinations at the University of Cambridge the next year. It passed through fifteen editions in the author's lifetime. Paley strenuously supported the abolition of the slave trade, and his attack on slavery in the book was instrumental in drawing greater public attention to the practice. In 1789, a speech he gave on the subject in Carlisle was published. The Principles was followed in 1790 by his first essay in the field of Christian apologetics, Horae Paulinae, or the Truth of the Scripture History of St Paul which compared Paul's Epistles with the Acts of the Apostles, making use of "undesigned coincidences" to argue that these documents mutually supported each other's authenticity. Some have said this book was the most original of Paley's works. It was followed in 1794 by the celebrated View of the Evidences of Christianity, which was also added to the examinations at Cambridge, remaining on the syllabus until the 1920s. For his services in defence of the faith, with the publication of the Evidences, the Bishop of London gave him a stall in St Paul's; the Bishop of Lincoln made him subdean of that cathedral, and the Bishop of Durham conferred upon him the rectory of Bishopwearmouth. During the remainder of Paley's life, his time was divided between Bishopwearmouth and Lincoln, during which time he wrote Natural Theology: or, Evidences of the Existence and Attributes of the Deity, despite his increasingly debilitating illness. He died on 25 May 1805 and is buried in Carlisle Cathedral with his two wives. Among his grandsons were: the classical scholar Frederick Apthorp Paley (1815-1888) and his brother the architect Edward Graham Paley (1823-1895), sons of the Rev. Edmund Paley (1782-1850). Thought Paley's Principles of Moral and Political Philosophy was one of the most influential philosophical texts in late Enlightenment Britain. It was cited in several parliamentary debates over the corn laws in Britain and in debates in the US Congress. The book remained a set textbook at Cambridge well into the Victorian era. Charles Darwin, as a student of theology, was required to read it when he did his undergraduate studies at Christ's College, but it was Paley's Natural Theology that most impressed Darwin even though it was not a set book for undergraduates. Portraits of Paley and Darwin face each other at Christ's College to this day. Paley is also remembered for his contributions to the philosophy of religion,