Analysis of A Confession To A Friend in Trouble

YOUR troubles shrink not, though I feel them less
       Here, far away, than when I tarried near;
     I even smile old smiles--with listlessness--
       Yet smiles they are, not ghastly mockeries mere.

A thought too strange to house within my brain
       Haunting its outer precincts I discern:
       --That I will not show zeal again to learn
     Your griefs, and, sharing them, renew my pain....

It goes, like murky bird or buccaneer
     That shapes its lawless figure on the main,
     And each new impulse tends to make outflee
     The unseemly instinct that had lodgment here;
     Yet, comrade old, can bitterer knowledge be
     Than that, though banned, such instinct was in me!