"Every discovery is a piece of the puzzle that is our universe."
States are rational actors that seek to maximize their power and security in an anarchic international system.
看不见的手之所以常常看不见,是因为它常常不存在。
人生在世,常常遇到不如意的小事,这是好兆头,可以避免重大的祸事发生。假如每件事都称心如意,那么必然会在以后遇到重大的挫折。明白这个道理,就会心平气和,不再怨天尤人。