相位裕度是系统在变得不稳定之前可以容忍的程度的度量。
A first sign of the beginning of understanding is the wish to die.
当你开始考虑如果你输了你会做什么的那一刻,你就已经输了。
The arc of the moral universe is long, but it bends toward justice.
A company is only as strong as its commitment to its community.