For men may prove and use their friends, as the poet expresses it, usque ad aras, meaning that a friend should not be required to act contrary to the law of God.
Miguel de CervantesOh Senor" said the niece. "Your grace should send them to be burned (books), just like all the rest, because it's very likely that my dear uncle, having been cured of the chivalric disease, will read these and want to become a shepherd and wander through the woods and meadows singing and playing and, what would be even worse, become a poet, and that, they say, is an incurable and contagious disease.
Miguel de Cervantes