This is a lecture video about a short selection from book 3 of David Hume’s famous work of philosophy, A Treatise of Human Nature (1739–40). Hume was an empiricist. The lecture of basically a presentation of his argument from empiricism to the conclusion that there are no genuine, objective moral facts residing in actions themselves (rather, there are only sentiments of moral disapprobation or disapproval in us). This lecture of part of Introduction to Ethics.