避免痛苦的唯一方法就是不要有足够的闲暇去思考自己是否幸福。
The only way to avoid being miserable is not to have enough leisure to wonder whether you are happy or not.
最好的想法往往来自倾听那些最接近问题的人。
关于自由市场最重要的一个核心事实是，除非双方都受益，否则交易不会发生。
The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.
The ocean is not a bottomless pit; resources are limited, and only by respecting nature can we achieve long-term development.