The best way to learn mathematics is to do mathematics.
学习数学的最好方法就是做数学。
Everything that has happened in my life has happened for a reason.
Let us try to teach generosity and altruism, because we are born selfish.
剑鞘保护剑的锋利,自己却满足於它自己的迟钝。
数学是给不同事物赋予相同名称的艺术。