我们都被某些东西困扰着，不是吗？
"We are all haunted by something, aren't we?"
The best way to learn mathematics is to do mathematics.
未来属于那些今天种树的人。
The only thing necessary for the triumph of evil is for good men to do nothing.
预测未来的最好方法就是创造未来。
解释：君子所说的话，可靠而且有证据。
"The past is always with us, whether we acknowledge it or not."
The greatest investment you can make is in yourself.