常识告诉我们，业绩来来去去，但成本永远存在。
Common sense tells us that performance comes and goes, but costs go on forever.
一本书就是你握在手中的一个梦想。
逃避痛苦的唯一方法是拥抱它。
Behavior is determined by the current stimulus situation and past reinforcement history.
A story is never finished; it’s only abandoned.