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.
Let him who would move the world first move himself.
每一次失败都是通往成功的垫脚石,只要我们从中学习。
The act of writing is an act of hope, a belief that someone will listen.
A man, as a general rule, owes very little to what he is born with – a man is what he makes of himself.