translation.en: And Adam Smith, of course, the father of modern economics actually said many, many years ago, the invisible hand, which is, "If you continue to operate in your own self-interest you will do the best good for society."
translation.zh: 当然，亚当·斯密，现代经济学之父 在很多很多年前就说过， 也就是“无形的手”， 这是说，“如果每个人都 追求自身利益， 这有助于实现公共福祉。”