伤疤有一种奇怪的力量，能提醒我们过去是真实的。
Scars have the strange power to remind us that our past is real.
The modern state is characterized by its ability to concentrate and use power in a way that premodern states could not.
The only way to do great work is to love what you do.
旅行对偏见、固执和狭隘是致命的。
物理学的美丽在于它能够用简单的原理解释复杂的事物。