Coal miners are the unsung heroes of America's industrial strength.
在计算中，不变量是短暂的。
科学的语言是普遍的，超越了国界和文化。
Fairy tales are more than true: not because they tell us that dragons exist, but because they tell us that dragons can be beaten.
The bond between humans and the land is fundamental to our survival.
Every man is born as many men and dies as a single one.
Escribir es la manera más profunda de leer la vida.