If you wish to be well served, serve yourself.
More Spanish Proverbs:
In the absence of honest men, they made my father mayor.Spanish
The greyhound that starts many hares kills none.
Spanish
Bleed him, purge him, and if he dies, bury him.
Spanish
Wit without discretion is a sword in the hand of a fool.
Spanish
The wolf changes his teeth, but not his disposition.
Spanish
He who grasps all loses all.
Spanish