Don’t wash your dirty linen in public.
More Traditional Proverbs:
One who looks for a friend without faults will have none.Traditional
Every flow has its ebb.
Traditional
Gossiping and lying go hand in hand.
Traditional
Regular feet can't be affected by irregular shoes.
Traditional
Vice is often clothed in virtue's habit.
Traditional
For want of a nail the shoe was lost; for want of a shoe the horse was lost; for want of a horse the rider was lost.
Traditional