Well known for his efforts to make philosophy accessible to a wider public, Simon is one of the country’s leading philosophers. He is well regarded as a proponent of a distinctive approach to ethics and a defender of neo-Humean views on a variety of topics. Simon has been a Vice-President of the British Humanist Association and a former editor of the journal Mind; he is, also, an Honorary Foreign Member of the American Academy of Arts and Sciences, as well as a Fellow of the British Academy.
Simon has published extensively. His books include Being Good – an introduction to ethics (reprinted as Ethics: a very short introduction), Lust (one of the Oxford University Press’s series on the seven deadly sins), Truth: A Guide and Plato’s Republic: A Biography.