It appears, accordingly, from the experience of all ages and nations, I believe, that the work done by freemen comes cheaper in the end than that performed by slaves.
Adam SmithThe property which every man has in his own labour, as it is the original foundation of all other property, so it is the most sacred and inviolable.
Adam SmithWhen we have read a book or poem so often that we can no longer find any amusement in reading it by ourselves, we can still take pleasure in reading it to a companion. To him it has all the graces of novelty.
Adam Smith