Price claims that self-evident truths are “incapable of proof” (1758/1969, 160).[4] Most classical intuitionists endorse this view, although Ross is arguably an exception. This is easily missed, for he states at one point that self-evident moral propositions “cannot be proved, but … just as certainly need no proof” (1930/2002, 30). But elsewhere in The Right and the Good he makes only the more restricted claim that such propositions do not need any proof,[5] and despite the fact that he