Essays, Moral, Political, and Literary, Part I (1741, 1742, 1748, 1757, 1777)Essays, Moral, Political, and Literary, Part II (1752, 1758)An Enquiry concerning Human Understanding (1748)A Dissertation on the Passions (1757)An Enquiry concerning the Principles of Morals (1751, 1764)The Natural History of Religion (1757)