Marcus Aurelius
Meditations 4.8
That which does not make a man worse than he was, also does not make his life worse, nor does it harm him either from without or from within.
Marcus Aurelius, Meditations 4.8, translated by George Long
That which does not make a man himself worse than before cannot make his life worse either, nor injure it whether from without or within.
Marcus Aurelius, Meditations 4.8, translated by C. R. Haines