Meditations 8.35

As the nature of the universal has given to every rational being all the other 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 purposes as it may have designed.

Marcus Aurelius, Meditations 8.35, translated by George Long

Just as the Nature of rational things has given each rational being almost all his other powers, so also have we received this one from it; that, as this Nature moulds to its purpose whatever interference or opposition it meets, and gives it a place in the destined order of things, and makes it a part of itself, so also can the rational creature convert every hindrance into material for itself and utilize it for its own purposes.

Marcus Aurelius, Meditations 8.35, translated by C. R. Haines