Night falls, and Faust is returned to his laboratory. The gray friar has followed him (like Goethe's poodle) and slips into an alcove unobserved. The philosopher turns to the Bible, which lies upon a lectern, and falls into a meditation, which is interrupted by a shriek. He turns and sees the friar standing motionless and wordless before him. He conjures the apparition with the seal of Solomon, and the friar, doffing cowl and gown, steps forward as a cavalier (an itinerant scholar in Goethe). He introduces himself as a part of the power that, always thinking evil, as persistently accomplishes good--the spirit of negation. The speech ("Son lo Spirito che nega sempre") is one of the striking numbers of Boito's score, and the grim humor of its "No! "seems to have inspired the similar effect in Falstaff's discourse on honor in Verdi's opera. The pair quickly come to an understanding on the terms already set forth. Act II carries us first into the garden of Dame Martha, where we find Margherita strolling arm in arm with Faust, and Martha with Mefistofele. The gossip is trying to seduce the devil into an avowal of love; Margherita and Faust are discussing their first meeting and the passion which they already feel for each other. Boito's Margherita has more of Goethe's Gretchen than Gounod's Marguerite. Like the former, she wonders what a cavalier can find to admire in her simple self, and protests in embarrassment when Faust (or Enrico, as he calls himself) kisses her rough hand. Like Goethe's maiden, too, she is concerned about the religious beliefs of her lover, and Boito's Faust answers, like Goethe's Faust, that a sincere man dares protest neither belief nor unbelief in God. Nature, Love, Mystery, Life, God--all are one, all to be experienced, not labelled with a name. Then he turns the talk on herself and her domestic surroundings, and presses the sleeping potion for her mother upon her. The scene ends with the four people scurrying about in a double chase among the flowers, for which Boito found exquisitely dainty music. There is a change from the pretty garden of the first scene, with its idyllic music, to the gathering place of witches and warlocks, high up in the Brocken, in the second. We witness the vile orgies of the bestial crew into whose circles Faust is introduced, and see how Mefistofele is acclaimed king and receives the homage. Here Boito borrows a poetical conceit from Goethe's scene in the witches' kitchen, and makes it a vehicle for a further exposition of the character and philosophy of the devil. Mefistofele has seated himself upon a rocky throne and been vested with the robe and symbols of state by the witches. Now they bring to him a crystal globe, which he takes and discourses upon to the following effect (the translation is Theodore T. Barker's):--