灵魂的快乐在于行动。

最大的智慧是知道自己一无所知。

Ignorance is the root and stem of all evil.

Your most unhappy customers are your greatest source of learning.

I can't go on, I'll go on.

"In the fields of observation chance favors only the prepared mind."

我不是一个放弃自己的人。

"History is not just about dates and events; it's about the people who lived through them."

"When you do something best in life, you don’t really want to give that up – and for me it’s tennis."