你唯一应该努力超越的人就是昨天的自己。
The only person you should try to be better than is the person you were yesterday.
Memory is not a fixed entity but a reconstructive process influenced by context and experience.
War is an ugly thing， but not the ugliest of things； the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth war is much worse.
无人机的未来不是替代人，而是赋能人。