Just as a male Adelie penguin must select exactly the right pebble for his beloved – the size, shape, colour and weight that will convince her of his worthiness, so must you select the poem that is exactly right for you. It may take a lifetime of effort, but oh! think of the joy it will bring!
(OK, this pebble business is something of a myth, although pebbles are definitely prized at nesting time. For the whole scandalous sex-for-pebbles exposé, read this.)