Moral sense theory in the context of "Sentimentality"

A Treatise of Human Nature: Being an Attempt to Introduce the Experimental Method of Reasoning into Moral Subjects (1739–40) is a book by Scottish philosopher David Hume, considered by many to be Hume's most important work and one of the most influential works in the history of philosophy. The book has appeared in many editions since the death of the author in 1776.

The Treatise is a classic statement of philosophical empiricism, scepticism, and naturalism. In the introduction Hume presents the idea of placing all science and philosophy on a novel foundation: namely, an empirical investigation into human nature. Impressed by Isaac Newton's achievements in the physical sciences, Hume sought to introduce the same experimental method of reasoning into the study of human psychology, with the aim of discovering the "extent and force of human understanding". Against the philosophical rationalists, Hume argues that the passions, rather than reason, cause human behaviour. He introduces the famous problem of induction, arguing that inductive reasoning and our beliefs regarding cause and effect cannot be justified by reason; instead, our faith in induction and causation is caused by mental habit and custom. Hume defends a sentimentalist account of morality, arguing that ethics is based on sentiment and the passions rather than reason, and famously declaring that "reason is, and ought only to be the slave to the passions." Hume also offers a sceptical theory of personal identity and a compatibilist account of free will.

As a literary mode, sentimentalism, the practice of being sentimental, and thus tending towards making emotions and feelings the basis of a person's actions and reactions, as opposed to reason, has been a recurring aspect of world literature. Sentimentalism includes a variety of aspects in literature, such as sentimental poetry, the sentimental novel, and the German sentimentalist music movement, Empfindsamkeit. European literary sentimentalism arose during the Age of Enlightenment, partly as a response to sentimentalism in philosophy. In eighteenth-century England, the sentimental novel was a major literary genre. The genre developed in England between 1730 and 1780 at the time of high enlightenment from where it spread to other European literatures. Its philosophical basis primarily came from Anthony Ashley Cooper, 3rd Earl of Shaftesbury, a pupil of John Locke.

Francis Hutcheson (/ˈhʌtʃɪsən/; 8 August 1694 – 8 August 1746) was an Irish philosopher of Scottish descent, widely regarded as one of the key figures of the early Scottish Enlightenment. He served as Professor of Moral Philosophy at the University of Glasgow and was a major advocate of moral sense theory, which holds that humans possess an innate sense that guides moral judgments. Hutcheson is best known for his ethical writings, in which he defends benevolence as the primary source of moral virtue and anticipates later utilitarian theories with his formulation of "the greatest happiness for the greatest number".

Beyond ethics, Hutcheson made significant contributions to aesthetics, epistemology, logic, and metaphysics. He was among the first modern thinkers to explore beauty as a product of an internal sense, helping to establish aesthetics as a distinct branch of philosophy. In epistemology, he engaged critically with John Locke's empiricism while defending the role of innate dispositions. In logic and metaphysics, he proposed early versions of common-sense realism and contributed to the development of the Scottish school of common sense.