How is louies later life an example of resilient optimism

When he was captured and tortured, he didn't let any of those horrible things get to him. Soldiers tried to dehumanize him and make him feel invisible. But he didn't give up. He stood firmly to Japanese soldiers and looked them in the eyes, he accepted the beatings and remained strong.

Explanation:

Without dignity, identity is erased. He said that soldiers could take all but not his dignity. After this war, he let everything go. When he decided to let the pain go, he felt free and full of forgiveness. His resilient optimism is shown when he forgives everyone for everything that happened, as for him the war was over.