Ethics is a branch of philosophy. It systematically inquires issues of morality and explores ‘what is the right thing to do’ and ‘how could we live a good life’. This course provides an introduction of ethics. We will first discuss some theoretical issues in moral philosophy, including ethical relativism, moral objectivism, moral value, social contract theory and the motive to be moral. Furthermore, we will introduce four normative theories, including egoism, utilitarianism, Kant’s deontological theory, and virtue theory. In the final part, we will discuss several important debates surrounding gender and ethics, religion and ethics, the fact/value problem, and the challenge of moral realism and skepticism.