"There is no such thing as a happy ending. There are just good places to stop."
Deep into that darkness peering, long I stood there wondering, fearing, doubting, dreaming dreams no mortal ever dared to dream before.
我永远不会停止学习和尝试变得更好。
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.