The problem isn't that Johnny can't read. The problem isn't even that Johnny can't think. The problem is that Johnny doesn't know what thinking is; he confuses it with feeling.

数学中最美丽的东西是复杂背后的简单思想。

The challenge with hepatitis C was not just to find the virus, but to understand how it evades the immune system.

Economics is not just about predicting behavior; it's about shaping it.

自由民主的未来取决于其自我改革的能力，以及解决那些感到被全球化和技术变革抛下的人的合理不满。