The best ideas often come from unexpected places.

The stars shall fade away, the sun himself grow dim with age, and nature sink in years; but thou shalt flourish in immortal youth.

Sustainability isn’t a trend; it’s a responsibility we owe to future generations.

验证不仅仅是发现错误；它关乎理解系统为何以某种方式工作。

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.