From chapter 9 of Moby-Dick, Father Mapple’s sermon on Jonah:
All dressed and dusty as he is, Jonah throws himself into his berth, and finds the little state-room ceiling almost resting on his forehead. The air is close, and Jonah gasps. Then, in that contracted hole, sunk, too, beneath the ship’s water-line, Jonah feels the heralding presentiment of that stifling hour, when the whale shall hold him in the smallest of his bowels’ wards.
“Screwed at its axis against the side, a swinging lamp slightly oscillates in Jonah’s room; and the ship, heeling over towards the wharf with the weight of the last bales received, the lamp, flame and all, though in slight motion, still maintains a permanent obliquity with reference to the room; though, in truth, infallibly straight itself, it but made obvious the false, lying levels among which it hung. The lamp alarms and frightens Jonah; as lying in his berth his tormented eyes roll round the place, and this thus far successful fugitive finds no refuge for his restless glance. But that contradiction in the lamp more and more appals him. The floor, the ceiling, and the side, are all awry. ‘Oh! so my conscience hangs in me!’ he groans, ‘straight upwards, so it burns; but the chambers of my soul are all in crookedness!’
“Like one who after a night of drunken revelry hies to his bed, still reeling, but with conscience yet pricking him, as the plungings of the Roman race-horse but so much the more strike his steel tags into him; as one who in that miserable plight still turns and turns in giddy anguish, praying God for annihilation until the fit be passed; and at last amid the whirl of woe he feels, a deep stupor steals over him, as over the man who bleeds to death, for conscience is the wound, and there’s naught to staunch it; so, after sore wrestlings in his berth, Jonah’s prodigy of ponderous misery drags him drowning down to sleep.