Adam Smith (1817). “The Theory of Moral Sentiments: Or, An Essay Towards an Analysis of the Principles by which Men Naturally Judge Concerning the Conduct and Character, First of Their Neighbours, and Afterwards of Themselves : to which is Added, A Dissertation on the Origin of Languages”, p.421
Adam Smith (1817). “An inquiry into the nature and causes of the wealth of nations0: With a life of the author : Also a view of the doctrine of Smith, compared with that of the french economists ...”, p.19