Every time we teach a child something, we keep him from inventing it himself.

谦逊是伟大领导者的标志。

龙到浅水里会遭虾戏弄，虎落平原狗都会去欺负。

Complexity and contradiction are not problems to be solved, but opportunities to be explored.

数学是给不同事物赋予相同名称的艺术。