A word from the mouth, a stone from a sling.
More Spanish Proverbs:
Who arrays himself in other men's garments is stripped on the highway.Spanish
Folly is the most incurable of maladies.
Spanish
Wherever you are, do as you see done.
Spanish
He that will not when he may, when he will he shall have nay.
Spanish
Love one that does not love you, answer one that does not call you, and you will run a fruitless race.
Spanish
He who works on the highway will have many advisers.
Spanish