One of the most significant disputes in early modern philosophy was between the moral rationalists and the moral sentimentalists. The moral rationalists — such as Ralph Cudworth, Samuel Clarke and John Balguy — held that morality originated in reason alone. The moral sentimentalists — such as Anthony Ashley Cooper, the third Earl of Shaftesbury, Francis Hutcheson and David Hume — held that morality originated at least partly in sentiment. In addition to arguments, the rationalists and sentimentalists developed rich analogies. The (...) most significant analogy the rationalists developed was between morality and mathematics. The most significant analogy the sentimentalists developed was between morality and beauty. These two analogies illustrate well the main ideas, underlying insights, and accounts of moral phenomenology the two positions have to offer. An examination of the two analogies will thus serve as a useful introduction to the debate between moral rationalism and moral sentimentalism as a whole. (shrink)

One of Hume's most well-known works and a masterpiece of philosophy, A Treatise of Human Nature is indubitably worth taking the time to read.

(2013). Leibniz, Pufendorf, and the Possibility of Moral Self-Governance. British Journal for the History of Philosophy: Vol. 21, No. 2, pp. 281-301. doi: 10.1080/09608788.2012.693064.

The correspondence between Leibniz and Samuel Clarke was probably the most famous and influential philosophical exchange of the eighteenth century. It focused on the clash between the Newtonian and Leibnizian world systems, involving disputes in physics, theology, and metaphysics. Vailati's book provides a comprehensive overview and commentary on this important body of letters. He not only identifies and evaluates the various arguments, but situates the views advanced by the correspondence in the context of their principal writings.

Introduction to the work David Hume described as the best of his many writings.

While he was in the employ of the Elector of Mainz, between 1668 and 1671, Leibniz produced a series of important studies in natural law. One of these, dated between 1670 and 1671, is especially noteworthy since it contains Leibniz's earliest sustained attempt to develop an account of justice. Central to this account is the notion of what Leibniz would later come to call `disinterested love', a notion that remained essentially unchanged in Leibniz's work from this period to the end (...) of his life. Through his notion of disinterested love, Leibniz sought to resolve the supposed conflict between self- and other-regarding motives. For a variety of reasons, many commentators have failed to understand the basis of Leibniz's proposed resolution. My purpose in the present paper is to clarify the terms in which Leibniz effected this resolution, as well as to point out important developments in his later thought concerning the relation between pleasure, good, and happiness. (shrink)

Most interpreters think that for Leibniz, teleology is goodness-directedness. Explaining a monadic action teleologically, according to them, simply means explaining it in terms of the goodness of the state at which the agent aims. On some interpretations, the goodness at issue is always apparent goodness: an action is end-directed iff it aims at what appears good to the agent. On other interpretations, the goodness at issue is only sometimes apparent goodness and at other times merely objective goodness: some actions do (...) not aim at what appears good to the agent, but merely at what is objectively good—that is, at what God knows to be good—and that is sufficient for teleology. My paper, on the other hand, argues that both of these interpretations are mistaken. Monadic teleology, I contend, does not have to consist in striving for the good; neither goodness nor God is required to make monadic actions teleological. (shrink)

A Treatise of Human Nature, David Hume's comprehensive attempt to base philosophy on a new, observationally grounded study of human nature, is one of the most important texts in Western philosophy. It is also the focal point of current attempts to understand 18th-century western philosophy. The Treatise addresses many of the most fundamental philosophical issues: causation, existence, freedom and necessity, and morality. The volume also includes Humes own abstract of the Treatise, a substantial introduction, extensive annotations, a glossary, a comprehensive (...) index, and suggestions for further reading. (shrink)

In philosophy, Leibniz is mostly noted for his optimism, e.g., his conclusion that our Universe is, in a restricted sense, the best possible one that God could have created. Leibniz, along with René Descartes and Baruch Spinoza, was one of the three great 17th century advocates of rationalism.

Hume is committed, By one of his criticisms of reason as the route to moral knowledge, To an internalist position. In the argument from motivation, Hume starts by observing that morality is practical--That morals excite passions and produce or prevent actions. But, Hume argues, Rationalist moral theories cannot explain how moral considerations motivate. This is because reason alone is incapable of motivating us. The premise that morality is practical, However, May be interpreted in two ways--Either in an externalist or internalist (...) manner. Charity requires us to adopt the internalist reading because only then is the argument valid. An internalist reading of the argument, However, Commits hume, In his constructive phase, To construing the moral sentiments of approval and disapproval as possessing motivational influence by themselves. But an examination of what hume has to say about the motives that prompt us to do what is right shows that he fails to provide such an account himself. This points to an inconsistency in hume's moral theory. (shrink)

What are ethical judgments about? And what is their relation to practice? How can ethical judgment aspire to objectivity? The past two decades have witnessed a resurgence of interest in metaethics, placing questions such as these about the nature and status of ethical judgment at the very center of contemporary moral philosophy. Moral Discourse and Practice: Some Philosophical Approaches is a unique anthology which collects important recent work, much of which is not easily available elsewhere, on core metaethical issues. Reinvigorated (...) naturalist moral realism and the various versions of moral realism, as well as irrealist, expressivist, and neo-Kantian constructivist theories are all represented in this fine collection, constituting a rich array of approaches to contemporary moral philosophy's most fundamental debates. An extensive introduction by Darwall, Gibbard, and Railton is also included, making this volume the most comprehensive and up-to-date work of its kind. Moral Discourse is ideally suited for use in courses in contemporary ethics, ethical theory, and metaethics. (shrink)