"To understand a person, you must first understand their silences."

The rise of China and other authoritarian states challenges the idea that liberal democracy is the only viable political system.

世界是残酷的，但它也是美丽的。

解析：一心在痛上，便无暇顾及他事。

Learning is the process of modifying symbolic structures to improve performance.

In the End, we will remember not the words of our enemies, but the silence of our friends.