Will the earth turn as it was taught, and if not, how shall I correct it?
-- Speaker (I Worried)

Importance: Oliver uses the disorientation and sing-song of an internal rhyme rather than an end-rhyme, and in only one place, to mimic the sense of anxiety the question is meant to invoke. Furthermore, though this comes at the end of a stanza listing other worries that are real and solvable, the worry recounted here is not, emphasizing the uselessness of obsessing over human concerns. Instead, Oliver says, it is better to enjoy the world as it is, and to sing while one can.

It is your life, which is so close to my own that I would not know where to drop the knife of separation.
-- Speaker (Oxygen)

Importance: This quotation is about the speaker's lover. This passage emphasizes how positivity is a choice – the speaker really is devastated, and, in looking forward to "the knife of separation...