出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第252页（261字）
指凡有缺点、错误被人指出，应该改过，若无则用以勉励自己，例对于别人的指正，我们应该保持有则改之，无则加勉的态度。
One's attitude toward comments and criticisms made for one's good should be"if mistakes exists，change them；if they do not，strive to keep the record good．"