The only way to learn mathematics is to do mathematics.

人不是环境的产物；相反，环境允许或刺激他的发展。

The rule of the wild is survival of the fittest. You have to be strong, smart, and adaptable to make it through.

真理是一个陷阱：你无法得到它而不被它得到；你无法通过捕捉真理来得到它，只有通过被它捕捉。

西方的生存取决于美国人重新确认他们的西方身份，以及西方人接受他们的文明独特性。

Rule of 7 in research. You can find out anything if you are willing to go seven levels. If the first source you ask doesn’t know， ask them who you should ask next， and so on down the line. If you are willing to go to the 7th source， you’ll almost always get your answer.

译文：西风落日下野草斑驳，秋日天空云淡风轻，一只孤鸟飞过。我这个两鬓斑白的游子，又骑着马登上了太行山。

最成功的企业是那些专注于为客户创造价值的企业。