Both Cohen and Schaumberg also make a clear distinction between guilt and shame - a trait linked to low self-esteem.

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His refusal to make a moral distinction between the mullahs and their democratic opponents - like his refusal in Cairo to make a moral distinction between a nuclear-armed Iran and a nuclear-armed America - makes clear that he is not interested in forging a factually accurate or morally clear-sighted foreign policy.

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As both make clear, Audubon's distinction was that he was a truly fine artist: his birds appear lifelike and as part of their natural surroundings, a welcome change from the stiff depictions used by earlier ornithologists such as Wilson.

ECONOMIST: John James Audubon