“There is no knight-errant that is not,” said Don Quixote; “but let us listen to him, for, if he sings, by that thread we shall extract the ball of his thoughts; 547 because out of the abundance of the heart the mouth speaketh.”

Sancho was about to reply to his master, but the Knight of the Grove’s voice, which was neither very bad nor very good, stopped him, and listening attentively the pair heard him sing this sonnet: