数学的研究就像空气或重力——它无处不在，你看不到它，但你知道它在那里。

For those who do return back to the countryside, they find themselves very welcome locally, because with the knowledge, skills and networks they have learned in the cities, with the assistance of the Internet, they're able to create more jobs, upgrade local agriculture and create new business in the less developed market.

广东话谚语

在观察的领域中，机遇只偏爱那种有准备的头脑。

Every setback is a setup for a comeback.

The historian’s task is to bring the dead to life.