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.
【释义】与其一味行善，不如先停止作恶；与其在犯错后弥补，不如平时谨慎反省，防微杜渐。
要有继续追逐梦想的勇气。
Every seed we plant today is an investment in tomorrow's food security.
Precision in experimentation is as important as creativity in hypothesis.
The best way to achieve superior investment results is to invest in a diversified portfolio of low-cost index funds.