过去的危险是人们成为奴隶。未来的危险是人们可能成为机器人。
The danger of the past was that men became slaves. The danger of the future is that men may become robots.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
牛大叫，但马却不回应；不是因为马没听到声音，是因为它们不是同类啊。点评：同类之间存在着客观联系，故能相应。
生命的意义在于活得充实，而不在于活得长久。
Every man is his own greatest enemy， and as it were his own murderer.
因此，凯恩斯警告说，股市将成为一场斗智斗勇的战斗，以预测几个月后传统估值的基础，而不是长期投资的预期收益率。