解释：河流川泽中有污水，深山草野中藏有瘴气，美玉也有微小的瑕疵。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

你越努力，就越幸运。

最好的建筑是那些随时间成长，优雅老去的建筑。