书是一面镜子：如果一只猿猴往里看，不太可能有一位使徒往外看。
A book is a mirror: if an ape looks into it, an apostle is unlikely to look out.
The most important single aspect of software development is to be clear about what you are trying to build.
适应性是当今动荡市场中企业最大的优势。
