Ta eph' hēmin

The substantive object of what is in our power — the inner sphere of opinion, impulse, desire, and aversion.

Ta eph' hēmin denotes not merely the abstract principle of control, but the concrete substance of what we have mastery over: our judgements (doxa), our impulses (hormē), our desires (epithumia), and our aversions (ekklisis). These four elements are the only domains over which Fortune and external circumstances have no power, because they reside entirely within the inner hēgemonikon.