Every night I go to bed, I wake up richer.

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.

诚信是企业立足的根本，失去诚信就失去一切。

在不幸中所表现出来的勇气，通常总是使卑怯的心灵恼怒，而使高尚的心灵喜悦的。

The story you believe is the one that will control you.

The advancement of mathematics is due to those who are driven not by the desire for application but by the joy of discovery.