We have suffered a general loss of concepts, the loss of a moral and political vocabulary. We no longer use a spread-out substantial picture of the manifold virtues of man and society… . [W]hat we require is a renewed sense of the difficulty and complexity of the moral life and the opacity of persons. We need more concepts in terms of which to picture the substance of our being; it is through an enriching and deepening of concepts that moral progress takes place.

Iris Murdoch, “Against Dryness” (1961)