There’s something amazing about the image of a man floating out at sea alone and driven “mad” by the fight between the finite body, the infinite weight of space below and above him, and the infinite boundaries of the mind.
Moby Dick, Pip is lost at sea:
"Out from the centre of the sea, poor Pip turned his crisp, curling, black head to the sun, another lonely castaway, though the loftiest and the brightest.
Now, in calm weather, to swim in the open ocean is as easy to the practised swimmer as to ride in a spring-carriage ashore. But the awful lonesomeness is intolerable. The intense concentration of self in the middle of such a heartless immensity, my God! who can tell it? Mark, how when sailors in a dead calm bathe in the open sea— mark how closely they hug their ship and only coast along her sides.
…
But it so happened, that those boats, without seeing Pip, suddenly spying whales close to them on one side, turned, and gave chase; and Stubb’s boat was now so far away, and he and all his crew so intent upon his fish, that Pip’s ringed horizon began to expand around him miserably. By the merest chance the ship itself at last rescued him; but from that hour the little negro went about the deck an idiot; such, at least, they said he was. The sea had jeeringly kept his finite body up, but drowned the infinite of his soul. Not drowned entirely, though. Rather carried down alive to wondrous depths, where strange shapes of the unwarped primal world glided to and fro before his passive eyes; and the miser-merman, Wisdom, revealed his hoarded heaps; and among the joyous, heartless, ever-juvenile eternities, Pip saw the multitudinous, God-omnipresent, coral insects, that out of the firmament of waters heaved the colossal orbs. He saw God’s foot upon the treadle of the loom, and spoke it; and therefore his shipmates called him mad. So man’s insanity is heaven’s sense; and wandering from all mortal reason, man comes at last to that celestial thought, which, to reason, is absurd and frantic; and weal or woe, feels then uncompromised, indifferent as his God."