With poison, one drop is enough.
More Mexican Proverbs:
The bowman who is a bad marksman has a lie ready.Mexican
The dog that has his bitch in town never barks well.
Mexican
The dog that has his bitch in town never barks well.
Mexican
Stupidity closes the doors of kindness.
Mexican
It's easy to trust a cat once you put the cream out of reach.
Mexican
He who is accustomed to evil is offended by good.
Mexican