齿弊舌存 written by chen1admincategoried in 中国成语大辞典 谓刚者易折，柔者难毁。语本汉刘向《说苑·敬慎》：“老子曰：‘夫舌之存也，岂非以其柔耶？齿之亡也，岂非以其刚耶？’”