What I’ve achieved in tennis is great, but who I am as a person is more important.
A coragem não é a ausência do medo, mas a vitória sobre ele.
你越深入数学，就越意识到还有多少未知。
Don't let the noise of others' opinions drown out your own inner voice.
不担心别人不了解自己，担心的是自己不能了解别人。