The heron-billed pale cattle-birds <br />That feed on some foul parasite <br />Of the Moroccan flocks and herds <br />Cross the narrow Straits to light <br />In the rich midnight of the garden trees <br />Till the dawn break upon those mingled seas. <br /> <br />Often at evening when a boy <br />Would I carry to a friend - <br />Hoping more substantial joy <br />Did an older mind commend - <br />Not such as are in Newton's metaphor, <br />But actual shells of Rosses' level shore. <br /> <br />Greater glory in the Sun, <br />An evening chill upon the air, <br />Bid imagination run <br />Much on the Great Questioner; <br />What He can question, what if questioned I <br />Can with a fitting confidence reply.<br /><br />William Butler Yeats<br /><br />http://www.poemhunter.com/poem/at-algeciras-a-meditaton-upon-death/
