物理学中的每一个发现都打开了一扇通往新奥秘的门。
Every discovery in physics opens the door to a new mystery.
Leadership is like pruning: sometimes you must cut back to allow stronger growth.
你知道,在中世纪的英国,但你遇见一个非常穷苦的人,你会认为他“不走运”,直接地说,那些不被幸运之神眷顾的人。
The tragedy of great power politics is that even well-intentioned states are forced to act in ways that can lead to conflict and war.