A word from the mouth is like a stone from a sling.
More Spanish Proverbs:
It is not the same thing to talk of bulls as to be in the bullring.
Spanish
The one-eyed man is a king in the country of the blind.
Spanish
There are all honest men, but my cloak is not to be found.
Spanish
The snake that seduced Eve spoke Spanish.
Spanish
Treat the small in the way you would want to be treated by the big.
Spanish