Horace the notion of decorum; with few exceptions, he focuses on high-born characters and national affairs as the subject of tragedy. In most other respects, though, the early tragedies are far closer to the spirit and style of moralities. They are episodic, packed with character and incident; they are loosely unified by a theme or character. In this respect, they reflect clearly the influence of Marlowe, particularly of Tamburlaine. Even in his early work, however, Shakespeare generally shows more restraint than Marlowe; he resorts to grandiloquent rhetoric less frequently, and his attitude towards his heroes is more nuanced, and sometimes more sceptical, than Marlowe's. By the turn of the century, the bombast of Titus Andronicus had vanished, replaced by the subtlety of Hamlet. In comedy, Shakespeare strayed even further from classical models. The Comedy of Errors, an adaptation of Menaechmi, follows the model of new comedy closely. Shakespeare's other Elizabethan comedies are more romantic. Like Lyly, he often makes romantic intrigue (a secondary feature in Latin new comedy) the main plot element; even this romantic plot is sometimes given less attention than witty dialogue, deceit, and jests. The "reform of manners", which Horace considered the main function of comedy, survives in such episodes as the gulling of Malvolio. Jacobean Shakespeare Shakespeare reached maturity as a dramatist at the end of Elizabeth's reign, and in the first years of the reign of James. In these years, he responded to a deep shift in popular tastes, both in subject matter and approach. At the turn of the decade, he responded to the vogue for dramatic satire initiated by the boy players at Blackfriars and St. Paul's. At the end of the decade, he seems to have attempted to capitalize on the new fashion for tragicomedy, even collaborating with John Fletcher, the writer who had popularized the genre in England. The influence of younger dramatists such as John Marston and Ben Jonson is seen not only in the problem plays, which dramatize intractable human problems of greed and lust, but also in the darker tone of the Jacobean tragedies. The Marlovian, heroic mode of the Elizabethan tragedies is gone, replaced by a darker vision of heroic natures caught in environments of pervasive corruption. As a sharer in both the Globe and in the King's Men, Shakespeare never wrote for the boys' companies; however, his early Jacobean work is markedly influenced by the techniques