债务要么产生于契约，要么产生于侵权行为。

I'm not going to change who I am just because people want me to be something else.

True leadership means making tough decisions today for a better tomorrow.

Nature speaks to us through patterns, even when those patterns are hidden beneath apparent randomness.

翻译：君主不应该因为发怒而兴兵，将领也不应该因为发怒而出战。符合国家利益就行动，不符合国家利益就停止。愤怒可以转变为欢喜，恼怒也可以转为喜悦，但国家灭亡了就不能再建立，人死了就不能复活。