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