Quality is not something you can add on to a product or service. It must be built in from the beginning.

"The world is a brutal place. My books reflect that."

书籍是反映我们梦想的镜子。

阴阳交替变化就是道，继承它的是善，成就它的是性。

做伟大的工作的唯一方法就是热爱你所做的事情。