From Gore Vidal’s “President Jonah“:
When the admirable Tiberius (he has had an undeserved bad press), upon becoming emperor, received a message from the Senate in which the conscript fathers assured him that whatever legislation he wanted would be automatically passed by them, he sent back word that this was outrageous. “Suppose the emperor is ill or mad or incompetent?” He returned their message. They sent it again. His response: “How eager you are to be slaves.”