充分活着就是接受欢乐与悲伤。

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

"A wordless book speaks in a universal language."

你唯一应该努力超越的人，就是昨天的自己。

The future of food depends on balancing tradition with innovation.

一本好书是一次伟大的冒险。