If someone speaks badly of ...

If someone speaks badly of you, do not defend yourself against the accusations, but reply; \
If someone speaks badly of you, do not defend yourself against the accusations, but reply; "you obviously don't know about my other vices, otherwise you would have mentioned these as well

Quotes from the same author

Men are disturbed not by things, but by the view which they take of them.
It is the nature of the wise to resist pleasures, but the foolish to be a slave to them.
Keep silence for the most part, and speak only when you must, and then briefly.
Know, first, who you are, and then adorn yourself accordingly.
We have two ears and one mouth so that we can listen twice as much as we speak.