危险的人是只有一个想法的人，因为他会为之战斗和牺牲。

The art of doing mathematics consists in finding that special case which contains all the germs of generality.

做出伟大工作的唯一方法是热爱你所做的事情。

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.

International politics is a brutal and dangerous business, and it is likely to remain that way.