Undying love to buy <br />I wrote upon <br />The corners of this eye <br />All wrongs done. <br />What payment were enough <br />For undying love? <br /> <br />I broke my heart in two <br />So hard I struck. <br />What matter? for I know <br />That out of rock, <br />Out of a desolate source, <br />Love leaps upon its course.<br /><br />William Butler Yeats<br /><br />http://www.poemhunter.com/poem/his-confidence/