Prospero's passionate love for his daughter makes him cunning and wise. Before he will trust his daughter to Ferdinand, he tests both the character and the love of the latter most severely. He even feigns anger and appears to be cruel and unjust. That he is feigning, neither suspect, but Miranda says: "Never till this day saw I him touch'd with anger so distemper'd," and "My father's a better nature, sir, than he appears by speech." When he is assured of Ferdinand's worthiness, of the sincerity of his love for Miranda and of her devotion to her young lover, he is delighted, and becomes so interested in the entertainment he is giving them, that he forgets the plot against his life, although the hour of his danger has arrived. It is true the father stoops to listening, but his purpose is so worthy, no one is inclined to cavil at his watchfulness, and, in any event, his exceeding care but justifies the feeling that his love for Miranda is the mainspring of his every act. On this small island Prospero is little less than a god, and controls affairs with almost supernatural justice and wisdom. Caliban, the ungrateful, terribly wicked monster, is punished unsparingly but with justice, for in the end with repentance he is forgiven, and the tortures cease. Ariel and the other obedient spirits, though reproved at times, are rewarded by freedom and placed beyond the reach of the evil powers of earth and air. The sufferings Prospero has endured, the intensity of his studies, and the fierceness of his struggles with the supernatural powers of evil, have given a tinge of sadness to his thought, and have led him to feel that the result of all his labors may amount to little. The world is to him but an insubstantial pageant that shall dissolve and fade, leaving not the trace of the thinnest cloud behind. And as for ourselves, "We are such stuff As dreams are made on, and our little life Is rounded with a sleep." Yet no sooner does he give way to this feeling than he sees how unkind it is to trouble the young with such musings, and says pathetically to Ferdinand, "Sir, I am vex'd; Bear with my weakness; my old brain is troubled: Be not disturbed with my infirmity."