《汉书·传·王莽传中》
天地表示威严，用来警戒我自己，您有什么过错呢，而要请求退休，造就不是用来帮助我的态度了。
天地动威，以戒予躬，公何辜焉，而乞骸骨，非所以助予者也。
Heaven and earth represent majesty and are used to warn myself, what fault have you that you should request retirement, and this is not an attitude of helping me.