to+go+on+bewilders+us.+NRF

And became as lonely as a shepherd and as overburdened by vast distances and summoned and stirred as from far away, and slowly, like a long new thread, introduced into that picture-sequence where now having to go on bewilders us.

I found the last stanza of this poem very powerful. I think that Rilke is explaining to us that as we were young, our boredom took us on imaginary journeys far away. How we were "overburdened" by the extensive amount time we had to dream and imagine we were in a different universe. And now as we vaguely remember snippets of our childhood imagination, a "picture-sequence," it mystifies us because we have lost the meaning of it. As we mature we lose the tiny moments in our childhood that used to entertain us.

Good job, Nolan. This poem is perhaps more complex than the others, and the analysis is therefore trickier, but I think you have identified its purpose well.