君子做学问，是为了完善自己；小人做学问，是为了哗众取宠。

形式语言和自动机的研究对于理解计算机科学的理论基础至关重要。

收敛精神，自己做主。

无人机的核心不是飞得多高，而是用得多好。

"I love to make people laugh, especially kids."

可是我想念你，珍妮。如果你想要什么，我就在你身边。

Economics is the study of how societies use scarce resources to produce valuable goods and services and distribute them among different individuals. If we think about the definitions, we find two key ideas that run through all of economics:

A good leader surrounds themselves with smart people and listens to their advice.

物理学家必须有一种信念，即自然之书是用一种他可以学会阅读的语言写成的。