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 a surrounding darkness. Romeo describes Juliet as being like the sun, brighter than a torch, a jewel sparkling in the night, and a bright angel among dark clouds. Even when she lies apparently dead in the tomb, he says her "beauty makes This vault a feasting presence full of light." Juliet describes Romeo as "day in night" and "Whiter than snow upon a raven's back." This contrast of light and dark can be expanded as symbols—contrasting love and hate, youth and age in a metaphoric way. Sometimes these intertwining metaphors create dramatic irony. For example, Romeo and Juliet's love is