For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.
对于系统，翻版的模拟是在控制图中添加一个创建循环的边，而不仅仅是一个附加节点。
The desert could not be claimed or owned–it was a piece of cloth carried by winds, never held down by stones, and given a hundred shifting names.
工作场所的多样性不仅仅是良好的道德规范 - 它还是良好的商业实践。
君子容易事奉，但要想讨得他的喜欢则很难。以不正当的方式讨他喜欢，他是不会喜欢的；但他在用人上，却能做到量才使用。小人难以事奉，但要想博得他的欢心则很容易。如果以不正当的手段讨他喜欢，他是会喜欢的；但当他用人时，则会求全责备。
Innovation requires both courage and perseverance.
I don't fear failure. I fear not trying.
Every man has a property in his own person. This nobody has a right to, but himself.