Here's another rewrite. The original was okay, but it was very short and didn't, IMHO, truly press home the point. Or at least my take on the point: That we are really not well positioned to even know when another has done wrong. And it's not in anyone's best interests for us to act like we are.
If any man has done wrong, the harm is his own. But perhaps he has not done wrong. (Marcus Aurelius - Meditations IX.38)