R. M. Hare
Richard Mervyn Hare  (21 March 1919 – 29 January 2002), usually cited as R. M. Hare, was a British moral philosopher who held the post of White's Professor of Moral Philosophy at the University of Oxford from 1966 until 1983. He subsequently taught for a number of years at the University of Florida. His meta-ethical theories were influential during the second half of the twentieth century. Hare is best known for his development of prescriptivism as a meta-ethical theory, which he argues is supported by analysis of formal features of moral discourse, and for his defence of preference utilitarianism based on his prescriptivism. Some of Hare's students, such as Brian McGuinness, John Lucas, and Bernard Williams went on to become well-known philosophers.