The Merchant of Venice live in a ghetto protected by Christian guards. Shakespeare's play may be seen as a continuation of this tradition. The title page of the Quarto indicates that the play was sometimes known as "The Jew of Venice" in its day, which suggests that it was seen as similar to Marlowe's "The Jew of Malta". One interpretation of the play's structure is that Shakespeare meant to contrast the mercy of the main Christian characters with the vengefulness of a Jew, who lacks the religious grace to comprehend mercy. Similarly, it is possible that Shakespeare meant Shylock's forced conversion to Christianity to
Jessica (The Merchant of Venice) and classical comedies, who are only fit to be dupes of their children …." The first critical notice of Jessica in the 18th century was made by William Warburton, who commented on the line in Act 5, Scene 1: "Fair ladies, you drop manna in the way / Of starvèd people." Warburton's comment was that ""Shakespear" is not more exact in any thing, than in adapting his images with propriety to his speakers; of which he has here given an instance in making the young "Jewess" call good fortune, "Manna"." Unfortunately, as Samuel Johnson explains rather drily—in a note to