这是最好的时代，这是最坏的时代。

数学是上帝用来书写宇宙的语言。

The friend who holds your hand and says the wrong thing is made of dearer stuff than the one who stays away.

I didn't just jump back on the bike and win. There were a lot of ups and downs, good results and bad results, but this was a long-term plan.

舞台上的每一分钟，都是我最珍惜的时刻。