It's not the ideal of human existences; it's not the best possible life we can imagine ourselves having.

它并非人类完美的存在;,它不是我们所能想象的最美好的生活。

耶鲁公开课 - 死亡课程节选

Now, people may come and go, but perfect justice -the idea of perfect justice--that's timeless.

人类可能生老病死,但是完美的正义,或者说完美正义的理念,是永恒的

耶鲁公开课 - 死亡课程节选