Over 2,000 years ago, the Stoic philosopher Seneca wrote, “Show me a man who is not a slave.” Seneca was speaking of mental enslavement: “One is a slave to lust, another to greed, another to ambition, and all men are slaves to fear.”
The Roman Emperor Marcus Aurelius was also a Stoic philosopher. In Meditations, he wrote, “Alexander and Caesar and Pompey. Compared with Diogenes, Heraclitus, Socrates? The philosophers knew the what, the why, the how. Their minds were their own. The others? Nothing but anxiety and enslavement.”