Empty vessels make most noise.
More Italian Proverbs:
Love is the true price at which love is bought.Italian
Who frequents the kitchen smells of smoke.
Italian
Even a frog would bite if it had teeth.
Italian
Beware of one who has nothing to lose.
Italian
The wolf bemoans the sheep, and then eats it.
Italian
Look with suspicion on the flight of an enemy.
Italian