Adam Smith (1723-1790), The Theory of Moral Sentiments
, ed. Knud Haakonssen (Cambridge: Cambridge University Press, 2002), pp. 100-101:
Society, however, cannot subsist among those who are at all times
ready to hurt and injure one another. The moment that injury begins, the moment that mutual resentment and animosity take place,
all the bands of it are broke asunder, and the different members of
which it consisted are, as it were, dissipated and scattered abroad by
the violence and opposition of their discordant affections.