Courage is the persistence in the face of fear.

The only way to achieve the impossible is to believe it is possible.

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

PID控制器的本质在于它能够根据系统的过去和现在状态预测其未来行为。

Quality should never be compromised for short-term gains.

Nothing is as important as passion. No matter what you want to do with your life, be passionate.

The best stock to buy is the one you already own.