[The real work is discovering a poem's] rules and regulations, the channels for its energy. Some forms—[sonnet, ghazal, haiku]—seem to transcend linguistic and cultural origins…. Others [such as] sapphic stanzas [are valuable because] they don't translate as well so they force a poet writing in [English] to work three times as hard to match those [rhythms] into this dactylic-trochaic structure that would be much easier to achieve in Sappho's Greek. [I think] writing formal verse is easier in general than free verse [because it's harder]: it makes the poet work harder. It is easier to be lazy in free verse, easier not to pay attention to either music or meaning, easier to throw an improperly balanced pot….