Persistence is key in mathematical research; many great results come from looking at the same problem from different angles over and over again.
The most sustainable resource is human ingenuity.
建筑是一门社会艺术,建筑师是一个社会存在。
外交是一门没有永久朋友,只有永久利益的学科。
The strength of a state is in the well-being of its people.