Freedom is the oxygen of creativity; without it, art suffocates.
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。
The value of life lies in what you create for others, not in what you possess.
Happiness and unhappiness depend upon the opinion we have of things.
I’m not afraid of falling, I’m afraid of the fear of falling.