With stubborn patience as with triple steel.
Another part, in squadrons and gross bands,
On bold adventure to discover wide
That dismal world, if any clime perhaps
Might yield them easier habitation, bend
Four ways their flying march, along the banks
Of four infernal rivers, that disgorge
Into the burning lake their baleful streams--
Abhorred Styx, the flood of deadly hate;
Sad Acheron of sorrow, black and deep;
Cocytus, named of lamentation loud
Heard on the rueful stream; fierce Phlegeton,
Whose waves of torrent fire inflame with rage.
Far off from these, a slow and silent stream,
Lethe, the river of oblivion, rolls
Her watery labyrinth, whereof who drinks
Forthwith his former state and being forgets--
Forgets both joy and grief, pleasure and pain.
Beyond this flood a frozen continent
Lies dark and wild, beat with perpetual storms
Of whirlwind and dire hail, which on firm land
Thaws not, but gathers heap, and ruin seems
Of ancient pile; all else deep snow and ice,
A gulf profound as that Serbonian bog
Betwixt Damiata and Mount Casius old,
Where armies whole have sunk: the parching air
Burns frore, and cold performs th' effect of fire.
Thither, by harpy-footed Furies haled,
At certain revolutions all the damned
Are brought; and feel by turns the bitter change