《晋书·列传·第十七章》
由此推断，周公任职已经不容易处理，何况现在圣上的年龄不是周成王的年龄呢？
以此推之，周公之任既未易而处，况圣上春秋非成王之年乎！
By this inference, it is not easy for Duke Zhou to take up his post, not to mention that the current sage's age is not the same as that of King Cheng of Zhou?