"But in the midst of his conversation he stopped and became silent, keeping his eyes fixed upon the ground for some time, during which we stood still waiting anxiously to see what would come of this abstraction; and with no little pity, for from his behaviour, now staring at the ground with fixed gaze and eyes wide open without moving an eyelid, again closing them, compressing his lips and raising his eyebrows, we could perceive plainly that a fit of madness of some kind had come upon him; and before long he showed that what we imagined was the truth, for he arose in a fury from the ground where he had thrown himself, and attacked the first he found near him with such rage and fierceness that if we had not dragged him off him, he would have beaten or bitten him to death, all the while exclaiming, 'Oh faithless Fernando, here, here shalt thou pay the penalty of the wrong thou hast done me; these hands shall tear out that heart of thine, abode and dwelling of all iniquity, but of deceit and fraud above all; and to these he added other words all in effect upbraiding this Fernando and charging him with treachery and faithlessness.
Y, estando en lo mejor de su plática, paró y enmudecióse; clavó los ojos en el suelo por un buen espacio, en el cual todos estuvimos quedos y suspensos, esperando en qué había de parar aquel embelesamiento, con no poca lástima de verlo; porque, por lo que hacía de abrir los ojos, estar fijo mirando al suelo sin mover pestaña gran rato, y otras veces cerrarlos, apretando los labios y enarcando las cejas, fácilmente conocimos que algún accidente de locura le había sobrevenido. Mas él nos dio a entender presto ser verdad lo que pensábamos, porque se levantó con gran furia del suelo, donde se había echado, y arremetió con el primero que halló junto a sí, con tal denuedo y rabia que, si no se le quitáramos, le matara a puñadas y a bocados; y todo esto hacía, diciendo: ''¡Ah, fementido Fernando!