By clarity I don't mean that we're always in kind of a simple area where everything is clear and comforting and understood. Clarity is certainly a way toward disorientation because if you don't start out - if the reader isn't grounded, if the reader is disoriented in the beginning of the poem, then the reader can't be led astray or disoriented later.
Billy CollinsA trouble with poetry is the presence of presumptuousness in poetry, the sense you get in a poem that the poet takes for granted an interest on the reader's part in the poet's autobiographical life, in the poet's memories, problems, difficulties and even minor perceptions. I try to presume that no one is interested in me. And I think experience bears that out. No one's interested in the experiences of a stranger - let's put it that way. And then you have difficulty combined with presumptuousness, which is the most dire trouble with poetry.
Billy Collins