The workman is known by his work.
More Italian Proverbs:
When good cheer is lacking, our friends will be packing.Italian
Measure three times and cut once.
Italian
Even the dog gets bread by wagging his tail.
Italian
A hungry dog does not fear the stick.
Italian
For the buyer a hundred eyes are too few, for the seller one is enough.
Italian
He who decries, wants to buy.
Italian