When a spirit in one of this author's poems declares "Ah, there is no God!", a sword from the sky comes down and smites him dead.
In one poem by this author, a man asks God if he ever made a just man, and God instructs him to listen to the defeat of the third and last surviving one. In another poem by this author, a wise man realizes that the only real thing in life is opinion, and concludes "opinion be damned." This author described a man who sees a ball that is made of clay when he possesses it, but made of gold when it's in the sky. When a spirit in one of this author's poems declares "Ah, there is no God!", a sword from the sky comes down and smites him dead. One of his poems describes "a (*) creature, naked, bestial / Who squatting upon the ground" eats something which he enjoys "Because it is bitter / And because it is [his] heart." His most famous poem instructs various people who have lost loved ones in battle, "Do not weep." For 10 points, name this American poet of the collections Black Riders and Other Lines and War Is Kind.
In one poem by this author, a man asks God if he ever made a just man, and God instructs him to listen to the defeat of the third and last surviving one.
Stephen Crane [prompt on Crane]