Vices are learned without a master.
More Italian Proverbs:
There are tricks in every trade.Italian
Wise men learn by other men's mistakes, fools by their own.
Italian
It is not for the blind to give an opinion on colors.
Italian
A dog is never offended at being pelted with bones.
Italian
The rich never have to seek out their relatives.
Italian
He who cannot revenge himself is weak, he who will not is contemptible.
Italian