Marcus Aurelius
Meditations 8.29
Wipe out thy imaginations by often saying to thyself: Now it is in my power to let no badness be in this soul, nor desire, nor any perturbation at all; but looking at all things I see what is their nature, and I use each according to its value.—Remember this power which thou hast from nature.
Marcus Aurelius, Meditations 8.29, translated by George Long
Efface thy impressions, saying ever to thyself: Now lies it with me that this soul should harbour no wickedness nor lust nor any disturbing element at all; but that, seeing the true nature of all things, I should deal with each as is its due. Bethink thee of this power that Nature gives thee.
Marcus Aurelius, Meditations 8.29, translated by C. R. Haines