The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

搭便车的时候，你得看上去像一个你自己也愿意接上车的人。

拍电影以外的所有事情都让我紧张。

To be a philosopher is not merely to have subtle thoughts, nor even to found a school, but so to love wisdom as to live according to its dictates.

无论我们承认与否，过去始终存在。