Adam Smith acquired yet another fifteen minutes of fame when his views on collusion were injected into the Supreme Court's ruling in Bell Atlantic v. Twombly. We consider Smith's views on the small group solidarity. Motivation by a desire for approbation provides Smith's explanation for the...

Experimental economists frequently invoke Adam Smith's notion of sympathy, and experimental treatments typically examine sympathy in situations where two groups are involved. We explore additional implications of sympathy suggested by the work of later classical economists. We link the notion of...