He that will, does more that he that can.
More Portuguese Proverbs:
The bird hunting a locust is unaware of the hawk hunting him.Portuguese
Ill fares the young bird in the urchin's hand.
Portuguese
Bite the biter.
Portuguese
A small pack becomes a small pedler.
Portuguese
He who serves two masters has to lie to one.
Portuguese
Every one is wise for his own profit.
Portuguese