Seneca tells us that we should each have our own Cato—a great and noble person we can allow into our minds and use to guide our actions, even when they’re not physically present. The economist Adam Smith had a similar concept, which he called the indifferent spectator. It doesn’t have to be an actual person, just someone who, like Seneca said, can stand witness to our behavior. Someone who can quietly admonish us if we are considering doing something lazy, dishonest, or selfish. And if we do it right, and live our lives in such a way, perhaps we can serve as someone else’s Cato or indifferent
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