The structure of the international system, not the intentions of individual states, is the primary determinant of state behavior.

我相信要想成功，就必须愿意做出牺牲。

预测未来的最好方法就是去发明它。

译文：我衰老得太厉害了!感慨平生交游的朋友渐渐零落，如今还剩下几个?白发空自垂下三千丈，对人间万事只能付之一笑。试问什么事物能让我真正欢喜?

Technology is the answer, but what was the question?

迭代是发明之母。