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I'm not a hero, I'm just a man who sings about them.

Cada hombre lleva dentro de sí todas las edades de la humanidad.

Every tree planted today is an investment in a greener tomorrow.

The most important skill for an economist is the ability to think clearly about trade-offs.

出自《論語·先進篇第十一》。子路問孔子說：“我大膽的請教您，死是怎么回事呢？”孔子回答說：“還不知道生是怎么一回事，怎么能夠知道死亡呢？”