Having acknowledged the threat of relativism, nihilism, and scepticism, ‘Foundations’ asks: Is there such a thing as moral knowledge? Is there moral progress? These questions are not answered by science, or religion, or metaphysics, or logic. They have to be answered from within our own moral perspective. We cannot get behind ethics. We need standards of behaviour, in our own eyes, and we need recognition in the eyes of others. So our concern is not to ‘answer’ the relativist by some cunning intellectual or metaphysical trick. Our concern can only be to answer the challenge from within a set of standards which we uphold.