最危险的事情就是自以为知道自己在做什么。

Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable.

几个世纪以来，印第安人发展了手语来传达人们感兴趣的现象。来自不同部落（FORTRAN，LISP，ALGOL，SNOBOL等）的程序员可以使用不需要他们在小马上扛黑板的程序员。