Stave 1

I don't think Scrooge believes Marley yet. He was not totally sure about what he saw,

He tried to say “Humbug!” but stopped at the first syllable. And being, from the emotion he had undergone, or the fatigues of the day, or his glimpse of the Invisible World, or the dull conversation of the Ghost, or the lateness of the hour, much in need of repose; went straight to bed, without undressing, and fell asleep upon the instant.