All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.

诗是存在的原初语言。

Space becomes place when it's inhabited with life.

The trade-off between bias and variance is a fundamental concept in machine learning.

不期望完全效法古代，不墨守一成不变的旧规，研究当代的实际情况，从而采取相应的措施。