How we cite our quotes:
(Man, standing below him, has no such illusions.) (22)
This refers back to line 6-8. Is Man better off without these illusions, or is he missing out on some depth in his life?
But what the Man-Moth fears most he must do, although
he fails, of course, and falls back scared but quite unhurt. (23-24)
The Man-Moth is dreaming the impossible dream. He fails because it's impossible, but his failures don't bother him a bit. He gets up, dusts himself off, and goes about his business.
Each night he must
be carried through artificial tunnels and dream recurrent dreams. (33-34)
How does this tunnel compare or contrast with the tube on line 21?