Hobbes, Locke, Hume, and Rousseau are classic modern philosophers, widely consulted in matters of ethics and political theory. In this provocative study David Braybrooke challenges received scholarly opinion by arguing that these canonical theorists took St Thomas Aquinas as their point of reference, reinforcing rather than departing from his natural law theory. The natural law theory of St Thomas Aquinas is essentially a secular theory, says Braybrooke...