An Enquiry Concerning Human Understanding is a book by the Scottish empiricist philosopher David Hume, published in English in 1748. It was a revision of an earlier effort, Hume's A Treatise of Human Nature, published anonymously in London in 1739–40.
Hume conceived of philosophy as the inductive, experimental science of human nature. Taking the scientific method of the English physicist Sir Isaac Newton as his model and building on the epistemology of the English philosopher John Locke, Hume tried to describe how the mind works in acquiring what is called knowledge. He concluded that no theory of reality is possible; there can be no knowledge of anything beyond experience. Despite the enduring impact of his theory of knowledge, Hume seems to have considered himself chiefly as a moralist.
The moral sense school reached its fullest development in the works of two Scottish philosophers, Francis Hutcheson (1694–1746) and David Hume (1711–76). Hutcheson was concerned with showing, against the intuitionists, that moral judgment cannot be based on reason and therefore must be a matter…
