Fear of something is at the root of hate for others, and hate within will eventually destroy the hater.

"The more we learn, the more we realize how much we don't know."

真相很少是纯粹的，也从不简单。

物理学中的每一个发现都打开了一扇通往新奥秘的门。

国家是理性的行为体，它们寻求最大化相对权力，以确保在竞争性的国际体系中生存。