the play, though at times he uses it for other characters, such as Mercutio. Humour, also, is important: scholar Molly Mahood identifies at least 175 puns and wordplays in the text. Many of these jokes are sexual in nature, especially those involving Mercutio and the Nurse. Psychoanalytic criticism Early psychoanalytic critics saw the problem of Romeo and Juliet in terms of Romeo's impulsiveness, deriving from "ill-controlled, partially disguised aggression", which leads both to Mercutio's death and to the double suicide. Romeo and Juliet is not considered to be exceedingly psychologically complex, and sympathetic psychoanalytic readings of the play make the tragic male experience equivalent with sicknesses. Norman Holland, writing in 1966, considers Romeo's dream as a realistic "wish fulfilling fantasy both in terms of Romeo's adult world and his hypothetical childhood at stages oral, phallic and oedipal" – while acknowledging that a dramatic character is not a human being with mental processes separate from those of the author. Critics such as Julia Kristeva focus on the hatred between the families, arguing that this hatred is the cause of Romeo and Juliet's passion for each other. That hatred manifests itself directly in the lovers' language: Juliet, for example, speaks of "my only love sprung from my only hate" and often expresses her passion through an anticipation of Romeo's death. This leads on to speculation as to the playwright's psychology, in particular to a consideration of Shakespeare's grief for the death of his son, Hamnet. Feminist criticism Feminist literary critics argue that the blame for the family feud lies in Verona's patriarchal society. For Coppélia Kahn, for example, the strict, masculine code of violence imposed on Romeo is the main force driving the tragedy to its end. When Tybalt kills Mercutio, Romeo shifts into a violent mode, regretting that Juliet has made him so "effeminate". In this view, the younger males "become men" by engaging in violence on behalf of their fathers, or in the case of the servants, their masters. The feud is also linked to male virility, as the numerous jokes about maidenheads aptly demonstrate. Juliet also submits to a female code of docility by allowing others, such as the Friar, to solve her problems for her. Other critics, such as Dympna Callaghan, look at the play's feminism from a historicist angle, stressing that when the play was written the feudal order was being challenged by increasingly centralised government and