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How selfish soever man may be supposed, there are evidently some principles in his nature, which interest him in the fortune of others, and render their happiness necessary to him, though he derives nothing from it except the pleasure of seeing it. The greatest ruffian, the most hardened violator of the laws of society, is not altogether without it. I wrote The Theory of Moral Sentiments before The Wealth of Nations. Those who read only the second have missed my argument.