As the nature of the universal has given to every rational being all the powers that it has, so we have received from it this power also. For as the universal nature converts and fixes in its predestined place everything which stands in the way and opposes it, and makes such things a part of itself, so also the rational animal is able to make every hindrance its own material, and to use it for such purpose as it may have designed.

VIII, 35 - Meditations (c. 161–180 CE) - Book VIII