主不可以怒而兴师，将不可以愠而致战。合于利而动，不合于利而止。怒可以复喜，愠可以复悦，亡国不可以复存，死者不可以复生。
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。
The past is a story we tell ourselves.
If you believe in yourself, anything is possible.
It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.
If you want something said, ask a man; if you want something done, ask a woman.
抬起头来，上帝把最艰难的战斗交给他最坚强的战士。
水从高处流下来，势头非常急促
在数学的世界里，想象力比知识更重要。