《资治通鉴·唐纪·唐纪二》
智及生气地说： 当初事情成功的时候，你不怪我，到了要失败时，又想归罪于我，怎么不杀了我投降窦建德！ 
智及怒曰： 事捷之日，初不赐尤，及其将败，乃欲归罪，何不杀我以降窦建德！ 
Zhi Ji said angrily, "When things were going well, you didn't blame me, but when things were going to fail, you wanted to blame me. Why don't you kill me and surrender to Dou Jiande!"