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.
艺术不必有任何意义，它只需要对你有意义。
"Every story is a journey, and every character is a reflection of the human experience."
Cheerfulness is the best promoter of health and is as friendly to the mind as to the body.
心是脆弱的东西，容易破碎，但也有巨大的力量。
The stock market is filled with individuals who know the price of everything, but the value of nothing.