translation.en: One final point: I'm optimistic, because I believe we have the capacity, at moments of great challenge, to set aside the causes of distraction and rise to the challenge that history is presenting to us.
translation.zh: 最后一点。我很乐观，因为我相信 在面临重大挑战时，我们有能力 排除其他因素的干扰并应对 历史给我们带来的危机。