Writing about Graham Sutherland in 1950, the critic Robert Melville observed: ‘When one looks at a picture one finds oneself over the frontier or one doesn’t. Criticism has no power of making converts to an experience which occurs without the intervention of reason … Criticism considers the sensitive flesh of the image and discovers its spiritual stature: indeed, unless we pursue the meaning of the image as language, painting may well fall silent and rest content in the pride of its flesh.