我必须为每一个冠军头衔非常努力地工作。没有什么是白送给我的。

When the mind that is subtle goes out through the brain and the sense-organs, the gross names and forms appear; when it stays in the heart, the names and forms disappear.

The truth is rarely pure and never simple.

奈奎斯特准则提供了一种图形方法来确定闭环系统的稳定性。