不了解人的缺点，不了解人的优点，不了解人优点中的缺点，不了解人缺点中的优点，就不可以随便用人，不可以随便教人。
You don't need a weatherman to know which way the wind blows.
The only limits that exist are the ones in your mind.
人们为了保护自己不受伤害，会伤害他人。
The most important single aspect of software development is to be clear about what you are trying to build.