The only way to learn mathematics is to do mathematics.

史记

预测未来的最好方法就是创造未来。

I went to the woods because I wished to live deliberately. I wanted to live deep and suck out all the marrow of life, to put to rout all that was not life.

"The true essence of a character is revealed not through their actions, but through the choices they make in the face of adversity."

文学的衰落表明一个民族的衰落。这两者走下坡路的时间是齐头并进的。