Adam Smith,
The Essays of Adam Smith
“ What gratitude chiefly desires, is not only to make the benefactor feel pleasure in his turn, but to make him conscious that he meets with this reward on account of his past conduct, to make him pleased with that conduct, and to satisfy him that the person upon whom he bestowed his good offices was not unworthy of them. What most of all charms us in our benefactor, is the concord between his sentiments and our own, with regard to what interests us so nearly as the worth of our own character, and the esteem that is due to us. ”
