He who would take must give.
More Spanish Proverbs:
When ill-luck sleeps, let no one wake her.Spanish
God will listen to you whatever cloak you wear.
Spanish
God grant you good fortune, my son, for knowledge avails you little.
Spanish
It is better to be a mouse in a cat's mouth than a man in a lawyer's hands.
Spanish
Every one feels the cold according as he is clad.
Spanish
Of evils, the least.
Spanish