A child educated only at school is an uneducated child.

The truth is often hidden, and it takes courage to uncover it.

The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.

解释：任用有才能的人，对国家大有好处。

使我们真正幸福的方法是热爱我们的工作，并在其中找到乐趣。

现在你们不是国人的勇士，怎么能既学好学业又学好射箭呢？ 

Aquaculture companies must dare to go global and participate in international competition.

I cannot teach anybody anything。I can only make them think.

科学的语言是普遍的，超越了国界和文化。