自然界中每年的痛苦总量超出了所有体面的思考。在我写这句话的一分钟内，成千上万的动物被活生生地吃掉，许多其他动物在逃命，因恐惧而呜咽，其他动物则被寄生虫从内部慢慢吞噬，成千上万的动物因饥饿、口渴和疾病而死亡。
The total amount of suffering per year in the natural world is beyond all decent contemplation. During the minute that it takes me to compose this sentence, thousands of animals are being eaten alive, many others are running for their lives, whimpering with fear, others are slowly being devoured from within by rasping parasites, thousands of all kinds are dying of starvation, thirst, and disease.
市场永远不会错；意见往往是错的。
子夏说：“每天都学到些新东西，每月都不忘所学会的东西，就算好学了。”
When we write programs that "learn", it turns out that we do and they don't.