To do great things is difficult，but to command great things is more difficult.
有时最安静的时刻说得最响亮。
The night is a great poem, but the stars are its words.
权力不仅仅是控制，更是责任。
The only thing that matters is what you believe in yourself.
When you do something best in life, you don’t really want to give that up – and for me it’s tennis.