People with a sense of fulfillment think it a good world and would like to conserve it as it is, while the frustrated favor radical change.

There are some things so serious you have to laugh at them.

Concrete is the marble of our time, a democratic material.

我不是为了让人们喜欢而创作艺术，而是为了让人们思考。

自然实验是理解现实世界中因果关系的强大工具。

If you meddle in other people's marriages you may lose a friend, but acquire his wife.