Was there a time

Was there a time when dancers with their fiddles / In children’s circuses could stay their troubles? / There was a time they could cry over books, / But time has set its maggot on their track. // Under the arc of the sky they are unsafe. / What’s never known is safest in this life. / Under the skysigns they who have no arms / Have cleanest hands, and, as the heartless ghost / Alone’s unhurt, so the blind man sees best.