反应的概率由其强化历史决定。
The probability of a response is determined by its reinforcement history.
The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.
如果你发现自己在想 "咦,我的好刀呢?”或者“我的好笔在哪里?" 这意味着你有的是坏的东西。把坏的扔掉吧。
The world is changing very fast. Big will not beat small anymore. It will be the fast beating the slow.
幸福不是相信我们不需要改变;而是意识到我们可以改变。