David Humeʼs sympathetic principle applies to physical equals. In his account, we sympathize with those like us. By contrast, Adam Smithʼs sympathetic principle induces equality. We consider Humeʼs “other rational species” problem to see whether Smithʼs wider sympathetic principle would alter Humeʼs conclusion that “superior” beings will enslave “inferior” beings. We show that Smith introduces the notion of “generosity,” which functions as if it were Humeʼs justice even when there is no possibility of contract.