权力的代价总是高昂的，但无力的代价更高。
"The price of power is always high, but the price of powerlessness is higher."
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
地理学是关于地方的科学，而不是关于人的科学。
阅读是在不离开原地的情况下发现新的视野。
找不到时间娱乐的人迟早会被迫找时间生病。
最重要的是，尊重自己。
The deeper you go into memory, the less certain you become.