
1877 – 1971
Sir William David Ross (1877–1971) was a Scottish philosopher and Kantian ethicist best known for his theory of prima facie duties, which he developed as a pluralistic alternative to both utilitarianism and strict Kantian deontology. His work in moral philosophy, particularly in 'The Right and the Good' (1930), emphasized that multiple moral obligations can conflict and that practical wisdom is required to adjudicate between them. He also produced influential translations and commentaries on Aristotle.
Developed the theory of prima facie duties as a pluralistic moral framework
Authored 'The Right and the Good' (1930), a landmark text in 20th-century ethics
Critiqued utilitarian and single-principle deontological theories with a nuanced pluralism
Produced influential scholarly translations of Aristotle's Nicomachean Ethics and other works
Served as Provost of Oriel College, Oxford, and made major contributions to Oxford moral philosophy