Sus Minervam

Persons pretending to instruct those who are qualified to be their masters, or to inform others in matters of which they are themselves ignorant, fall under the censure of this adage; their conduct being as ridiculous as would be that of a sow who should presume to attempt to teach wisdom. Our clowns, not very delicately, tell you, not to teach your grandames to suck eggs, for, «a bove majori discit arare minor», the young ox learns to plow from the elder, not the elder from the young, and El Diablo saba mucho, the Spaniards say, porque es viejo, the devil knows a great deal, for he is old.