The political liberty of the subject is a tranquility of mind arising from the opinion each person has of his safety.
每本书都是一句引文；每座房子都是从所有森林、矿山和采石场中引用的；每个人都是从他所有祖先中引用的。
I’d tell men and women in their mid-twenties not to settle for a job or a profession or even a career. Seek a calling. Even if you don’t know what that means, seek it. If you’re following your calling, the fatigue will be easier to bear, the disappointments will be fuel, the highs will be like nothing you’ve ever felt.
Machinery and labor-saving devices are only valuable as they serve to reduce the cost of manufacture.
以孩子们能理解的方式写一些困难的主题是很重要的。
在深冬里，我终于明白，在我内心深处有一个不可战胜的夏天。
有些选择返回乡村的人，当地人十分欢迎他们回乡。因为他们在城市获得了知识，技术，和人际关系，通过互联网的帮助，他们可以创造更多工作，在发展较落后的地区将农业升级并创造更多商机。
"The only limit to our realization of tomorrow is our doubts of today."