Find the theme, and two devices of the following Romeo and Juliet Quote (and explain):

If fear too early, for my mind missives some consequences yet hanging in the stars shall bitterly begin his fearful date with this night’s revels and expire the term of a despised life, closed to my breast, by some vile forfeit of untimely death. But he that hath the steerage of my course direct my sail! On musty gentlemen!