The tragedy of great power politics is that it leads to conflict and war.
The goal of mathematics is not to solve problems, but to understand them.
不要每天吃饱整日无所用心,也不要舍弃每一分一秒的时光。
The speech we hear is an indication of that which we don't hear. It is a necessary avoidance, a violent, sly, anguished or mocking smokescreen which keeps the other in its place.