Go, songs, for ended is our brief, sweet play; <br />Go, children of swift joy and tardy sorrow: <br />And some are sung, and that was yesterday, <br />And some unsung, and that may be to-morrow. <br /> <br />Go forth; and if it be o'er stony way, <br />Old joy can lend what newer grief must borrow: <br />And it was sweet, and that was yesterday, <br />And sweet is sweet, though purchas-ed with sorrow. <br /> <br />Go, songs, and come not back from your far way: <br />And if men ask you why ye smile and sorrow, <br />Tell them ye grieve, for your hearts know To-day, <br />Tell them ye smile, for your eyes know To-morrow.<br /><br />Francis Thompson<br /><br />http://www.poemhunter.com/poem/envoy-3/