Where shall the ox go but he must labour, since he knows how?
More Portuguese Proverbs:
Talk of the wolf and behold his skin.Portuguese
You can't make horn of a pig's tail.
Portuguese
He keeps his road well enough who gets rid of bad company.
Portuguese
Every one is a king in his own house.
Portuguese
Poverty parteth friends.
Portuguese
A friend is to be taken with his faults.
Portuguese