To Sleep or Not to Sleep
... The theme of sleep, or sleeplessness, shows that Macbeth has paid a dear price for his success. Unless one is an insomniac, the importance of sleep doesn’t really preoccupy us. It’s almost like breathing; we do it, and undervalue it, yet sleep is one of the most important things in our lives. Shakespeare, in his genius, knew that if we really thought about it, we would really understand how important sleep is.