The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
但幸福除了一个人和他所过的生活之间的简单和谐之外,还有什么呢?
The people who are crazy enough to think they can change the world are the ones who do.
Always forgive your enemies; nothing annoys them so much.
睡在哪里不都是睡在夜里。
The selfish gene theory is not a theory about selfishness in the everyday sense. It is a theory about the evolution of behavior.