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没有道德的效率是通往失败的道路。
一个破坏其土壤的国家是在自我毁灭。
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
I believe in the power of art to inspire, to heal, and to bring people together.
数学家的工作永远不会真正完成;总有更多的东西需要探索。