Man cannot live without a permanent trust in something indestructible in himself, though both the indestructible element and the trust may remain permanently hidden from him. One of the ways in which this hiddenness can express itself is through faith in a personal god.
The subject of the poem usually dictates the rhythm or the rhyme and its form. Sometimes, when you finish the poem and you think the poem is finished, the poem says, "You're not finished with me yet," and you have to go back and revise, and you may have another poem altogether. It has its own life to live.