热切而强烈的渴望，是一切有效努力的泉源。
Eager and intense desire is the mainspring of all effective effort.
The most important thing in mathematics is to have a good intuition.
In this world, nothing makes you grow more than loneliness.
I'm a perfectionist, but I've learned to let go.
系统的稳定性取决于开环传递函数在复平面上的行为。