XXIII.
While thus they spake, the angelic caravan,
Arriving like a rush of mighty wind,
Cleaving the fields of space, as doth the swan
Some silver stream (say Ganges, Nile, or Inde,
Or Thames, or Tweed), and 'midst them an old man
With an old soul, and both extremely blind,
Halted before the gate, and in his shroud
Seated their fellow-traveller on a cloud.