就像一只乌龟通过把四肢缩入壳中来保护自己一样，一个智慧的人通过谨言慎行来保护自己远离罪恶。
Just as a tortoise protects itself by withdrawing all its limbs within its own body , similarly a wise man protects himself from evil by withdrawing himself from extrovertness . ( 137 )
缩入壳中