A quarry should heal the earth even as it harvests from it.
解释:教化不好,国政就难以治理。指治国治民,教化为先。
Escribir es una forma de estar en el mundo, de participar en él, de transformarlo.
数学不知道种族或地理边界;对于数学来说,文化世界是一个国家。
"The world is a stage, but the play is badly cast."