Philosophers thought of as intuitionists include Henry Sidgwick, H. A. Prichard, W. D. Ross, C. D. Broad, and A. C. Ewing. More recent intuitionists include Derek Parfit, John McDowell, and Thomas Scanlon. Though all but one of these philosophers are British, the expression "British intuitionism" standardly refers only to work done in the first half of the twentieth century by Prichard, Ross, Broad, and Ewing.

What Is Intuitionism?

To be an ethical intuitionist is to hold a combination of five views in metaethics, only one of which says anything about intuitions. The first view is the pluralist view that there are many different ways in which an action can get to be right or wrong, good or bad. This is opposed to monism, the view that all moral requirements can be captured in one basic principle. The classic example of monism is John Stuart Mill's utilitarianism...