The moment you stop believing, you're already defeated.

"Every saint has a past, and every sinner has a future."

正是在你做出决定的时刻，你的命运被塑造。

The art of life is to live in the present moment, and to make that moment as perfect as we can.

It is the preoccupation with possessions， more than anything else， that prevents us from living freely and nobly.

学习数学的最好方法就是去做数学。