Epictetus’ “Of Tranquility”: Don’t be a slave, exercise your prohairesis

In his discourse “Of Tranquility” (2.2), Epictetus frames his general advice, that we should keep in mind what is up to us and what is not, using the analogy of someone about to litigate a dispute in court. He advises his listeners to “consider . . . what you wish to maintain and what you…