看了一个论文集:Reappraisals of Rousseau: studies in honour of R. A. Leigh,其中有一篇“《百科全书》与'社会契约'”,作者统计了“社会”一词在卢梭主要著作中的各种用法,不过结论似乎是:It will be observed that a high proportion of the examples of his choice of nouns with which to link the word 'social' concern words conveying the notion of a contract; such synonyms for 'contract' as 'traite' and especially 'pacte' were obviously brought in for the sake of variety.也就是说,这几个说法本无太大差别,就是避免单调换着样说而已。