Lest that thy love prove likewise variable." From the very beginning, the lovers are designated as "star-cross'd" referring to an astrologic belief associated with time. Stars were thought to control the fates of humanity, and as time passed, stars would move along their course in the sky, also charting the course of human lives below. Romeo speaks of a foreboding he feels in the stars' movements 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 poems 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 end, the only way they seem to defeat time is through a death that makes them immortal through art. Time is also connected to the theme of light and dark. In Shakespeare's day, plays were most often performed at noon or in the afternoon in broad daylight. This forced the playwright to use words to create the illusion of day and night in his plays. Shakespeare uses references to the night and day, the stars, the moon, and the sun to create this illusion. He also has characters frequently refer to days of the week and specific hours to help the audience understand that time has passed in the story. All in all, no fewer than 103 references to time are found in the play, adding to the illusion of its passage. Criticism and interpretation Critical history The earliest known critic of the play was diarist Samuel Pepys, who wrote in 1662: "it is a play of itself the worst that I ever heard in my life." Poet John Dryden wrote 10 years later in praise of the play and its comic character Mercutio: "Shakespear show'd the best of his skill in his Mercutio, and he said himself, that he was forc'd to kill him in the third Act, to prevent being killed by him." Criticism of the play in the 18th century was less sparse but no less divided. Publisher Nicholas Rowe was