学习数学的唯一方法就是做数学。
I don't have time to hate people who hate me, because I'm too busy loving people who love me.
La puissance ne consiste pas à frapper fort ou souvent, mais à frapper juste.
The more you know who you are, and what you want, the less you let things upset you.
真正的智能一定是能够理解、推理和决策的。