系统的稳定性取决于开环传递函数在复平面上的行为。

善恶之间的界限是可渗透的，任何人都可以跨越。

Every decision we make today shapes the world of tomorrow.

I tell you, we are here on Earth to fart around, and don't let anybody tell you different.

I don’t play tennis for money or fame. I play because I love it.

最大的风险是不承担任何风险。

人生最难学的是该过哪座桥，该烧哪座桥。

勇敢是美德之首。