The ultimate measure of a man is not where he stands in moments of comfort and convenience， but where he stands at times of challenge and controversy.

一项发明可能价值连城，但对发明者却毫无价值。

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

最终，我们都只是故事。

自由民主的传播和世界经济的整合已经创造了一种情况，即大国不再愿意冒险相互开战。