Meditation 8.48

48. Remember that the governing self becomes invincible when it withdraws into itself and is satisfied with itself, doing nothing which it does not will to do, even if its opposition is unreasonable. How much more then when it decides both with reason and circumspection about a given case? On this account the understanding free from passions is a citadel of refuge; for man has nothing stronger into which to retreat and be thereafter inexpugnable. He then who has not seen this is uninstructed; he who has seen it and does not retreat is unfortunate.