学习数学的最好方法就是做数学。
The best way to learn mathematics is to do mathematics.
Education is the foundation of conservation—people protect what they understand.
The food issue is not only an economic issue, but also a political one, related to the long-term stability of the country.
高尚的人是履行自己职责而不关心结果的人。
最好的小说比任何新闻报道都真实得多。