" One important characteristic of civilization is trust. When you can trust the people you deal with—when you don’t have to fear that your trust will be exploited for someone else’s gain—life is lovelier and economic life is much easier. How does trust get created? By the myriad small interactions we have with each other when we honor our word and pass up the chance for opportunism. "

― Russ Roberts , How Adam Smith Can Change Your Life: An Unexpected Guide to Human Nature and Happiness