States are rational actors that seek to maximize their power and security in an anarchic international system.

宇宙可以被理解这一事实是一个奇迹。

The lesson of quantum mechanics is that we must revise our classical notions of reality.

有时候最难的部分不是放手，而是学会重新开始。

Success is stumbling from failure to failure with no loss of enthusiasm.

The arts are a way of making sense of the world.

世界上充满了故事，但那些留在我们心中的，是那些触及我们最深恐惧和渴望的故事。