Mary Warnock (1977)
Mary sequentially covers (1) G.E. Moore’s anti-naturalism; (2) Prichard & Ross’ ‘Intuitionism’; (3) Ayer’s logical positivist approach (‘Emotivism’); and (4) later development by Stevenson and Nowell-Smith, including the latter’s Janus Principle; (5) moral psychology in general; and finishes with (6) a wonderful overview of Sartre’s Existentialism. An unmissable overview to Ethics before its entanglement with Political Philosophy. Newcomers will want to familiarize themselves with Utilitarianism first.