The best way to learn mathematics is to do mathematics.

金钱可以为你买到爱。

我使用的材料是时间的见证。

道法自然，顺应自然即是遵循道。

"A nation that destroys its soils destroys itself. Forests are the lungs of our land, purifying the air and giving fresh strength to our people."

I'm so high, I can hear heaven.

心理过程因其目的而存在。