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.
我们开采的每一吨煤炭都必须以最小的环境影响创造最大的价值。
The night is a world lit by itself.
【释义】世界上一切都是次要的，只有读书最重要、最高尚。
最大的风险是根本不承担任何风险。
FRUGALITY. Make no expense but to do good to others or yourself; i.e., waste nothing.
阅读只为心灵提供知识的材料；是思考使我们所读的东西成为我们自己的。
孔子说：“有益的朋友有三种，有害的朋友有三种。与正直的人交朋友、与诚实的人交朋友、与见多识广的人交朋友，有益处；与走邪门歪道的人交朋友、与谗媚奉迎的人交朋友、与花言巧语的人交朋友，有害处。”