《资治通鉴·唐纪·唐纪十三》
又将李泰所上表文拿给身边大臣看，并说： 李泰实在是有才智，朕常常念叨他，你们也都知道，但是为了社稷江山，不得不以道义与他断绝亲情，让他居住在遥远的地方，这也是两全之策呀。 
又以泰所上表示近臣曰： 泰诚为俊才，朕心念之，卿曹所知；但以社稷之故，不得不断之以义，使之居外者，亦所以两全之耳。 
He then showed Li Tai's memorial to the ministers around him and said: "Li Tai is really intelligent. I often think of him, and you all know that, but for the sake of the country, I have to cut off my relationship with him in a way that is both righteous and compassionate, and let him live in a remote place. This is the best of both worlds."