Romeo and Juliet the 20th century, these moral arguments were disputed by critics such as Richard Green Moulton: he argued that accident, and not some character flaw, led to the lovers' deaths. In "Romeo and Juliet", Shakespeare employs several dramatic techniques that have garnered praise from critics; most notably the abrupt shifts from comedy to tragedy (an example is the punning exchange between Benvolio and Mercutio just before Tybalt arrives). Before Mercutio's death in Act three, the play is largely a comedy. After his accidental demise, the play suddenly becomes serious and takes on a tragic tone. When Romeo is banished, rather than
Romeo and Juliet early in the play, and when he learns of Juliet's death, he defies the stars' course for him. Another central theme is haste: Shakespeare's "Romeo and Juliet" spans a period of four to six days, in contrast to Brooke's poem's spanning nine months. Scholars such as G. Thomas Tanselle believe that time was "especially important to Shakespeare" in this play, as he used references to "short-time" for the young lovers as opposed to references to "long-time" for the "older generation" to highlight "a headlong rush towards doom". Romeo and Juliet fight time to make their love last forever. In the