《资治通鉴·唐纪·唐纪十五》
李恪文武全才，太宗常常觉得他像自己，想要立他为太子，长孙无忌极力争辩才作罢，由此李恪与长孙无忌关系恶化。
恪有文武才，太宗常以为类己，欲立为太子，无忌固争而止，由是与无忌相恶。
Li Ke was talented in both literature and martial arts, and Emperor Taizong often felt that he was like himself and wanted to make him Crown Prince. Zhangsun Wuji argued strongly against it, and so Emperor Taizong gave up the idea. Because of this, Li Ke's relationship with Zhangsun Wuji deteriorated.