History is humanity's collective memory.
历史是人类的集体记忆。
真正的强大在于承认自己的软弱。
True innovation comes from a deep understanding of existing problems.
翻译：所以不完全了解用兵的危害，就不能完全了解用兵的好处。
改变世界的唯一方法就是改变我们的思维方式。
学习之道，没有什么比能够弄清事物的始末，来龙去脉更重要的。
Grow old along with me! The best is yet to be, the last of life, for which the first was made.
Security is always excessive until it's not enough.
在你和世界的斗争中，站在世界一边。