当你找不到人来喝你沏的茶时，当没有人需要你时，我想这就是人生完结的时候。
When you have nobody you can make a cup of tea for, when nobody needs you, that's when I think life is over.
Knowledge is the highest wealth of humanity, and sharing knowledge is the greatest generosity.
The only way to do great work is to love what you do.
世界是一个舞台，但剧本选角很糟糕。