Steinbeck's "The Flight": Naturalism In the Flight author Steinbeck uses Naturalism in his story. Naturalism is the theory that there are greater forces that control our lives. In the Flight, a boy named Pepe kills a man and is forced to leave his home and go out on his own. In his adventure he encounters many difficulties and he counters it with his actions. One of his difficulties was his new environment and one of his counters was his religion. After Pepe left his home, his sister already knew his fate. She already knew he was going to die even before it happen. As soon as his adventure began things started going against him. It was a continues string of ba