"Tomorrow rolled on its petty pace"

An allusion to Shakespeare’s play Macbeth, another text in which the protagonist descends into madness.

Tomorrow and tomorrow and tomorrow rolls on its petty pace from day to day to the last syllable of recorded time and all our yesterdays have lighted fools the way to dusty death. Out, out brief candle, life’s but a walking shadow, a poor player who struts and frets his hour upon the stage and then is heard no more: it is a tale told by an idiot, full of sound and fury, signifying nothing.