How dare the robins sing

How dare the robins sing,When men and women hearWho since they went to their accountHave settled with the year! —Paid all that life had earnedIn one consummate bill,And now, what life or death can doIs immaterial.Insulting is the sunTo him whose mortal lightBeguiled of immortalityBequeaths him to the night.Extinct be every humIn deference to himWhose garden wrestles with the dew,At daybreak overcome!