In The Theory of the Moral Sentiments, Smith emphasized that trust, responsibility and accountability exist only in a society that respects them, and only where the spontaneous fruit of human sympathy is allowed to ripen. It is where sympathy, duty and virtue achieve their proper place that self-interest leads, by an invisible hand, to a result that benefits everyone. And this means that people can best satisfy their interests only in a context where they are also on occasion moved to renounce them. Beneath every society where self-interest pays off, lies a foundation of self-sacrifice.