In this paper, we argue that Samuel Pufendorf's works on natural law contain a sentimentalist theory of morality that is Smithian in its moral psychology. Pufendorf's account of how ordinary people make moral judgements and come to act sociably is surprisingly similar to Smith's. Both thinkers maintain that the human desire for esteem, manifested by resentment and gratitude, informs people of the content of central moral norms and can motivate them to act accordingly. Finally, we suggest that given Pufendorf's theory (...) of socially imposed moral entities, he has all the resources for a sentimentalist theory of morality. (shrink)