Ethics is a branch of philosophy. It is also called moral philosophy. Philosophy is a discipline in which we ask and attempt to answer basic questions about key areas or subject matters of human life. We can ask philosophical questions about many subjects. In aesthetics, or the philosophy of art, philosophers ask about what kind of things do or should count as art, what leads to an appreciation of a work of art and so on. Philosophy of science, ask amongst other things whether science can give us knowledge of ultimate reality, whether progress exists in science and so on. In the philosophy of knowledge or epistemology, we try to answer questions about knowledge. Issues of reality are articulated in metaphysics and principles of correct reasoning in logic. Ethics or moral philosophy asks basic questions about the good life, about what is better and worse, about whether there is any objective right and wrong, and how we know if there is.