Feather by feather the goose can be plucked.
More French Proverbs:
The fool hunts for misfortune.French
Don't shut the barn door after the horse is stolen.
French
Trim my beard, and I will trim your top-knot.
French
To make a happy couple, the husband must be deaf and the wife blind.
French
The meaning is best known to the speaker.
French
One man, no man.
French