This course offers a survey of some of the main systematic approaches to issues in moral philosophy. We will look at several exemplary texts from the modern history of the subject (by Hobbes, Hume, Sidgwick, and Kant), as well as influential work by important contemporary philosophers (including Anscombe, Foot, Korsgaard, Railton, Scheffler, Wallace, Williams, and Wolf). Issues to be discussed include the following: What is it that distinguishes morality from other sets of requirements (e.g. those of etiquette or law or self-interest)? Why should we care about complying with moral demands? What is the relation between the right and the good (both the good of the agent, and the impersonal good)? Is there anything interesting that we can say, in general terms, about what makes actions morally right or wrong? Can the phenomenon of moral obligation be made sense of in the context of modern cultural and intellectual ideas?