《贞观政要·卷五·论忠义》
冯立，唐武德年间东宫统帅，深受太子李建成的厚待，太子死后，他以前的随从有很多都逃走了，冯立感叹道：哪有在太子活着的时候受他的恩惠，太子死了各自逃走避难的道理？
冯立，武德中为东宫率，甚被隐太子亲遇。太子之死也，左右多逃散，立叹曰： 岂有生受其恩，而死逃其难！ 
Feng Li, the commander of the East Palace during the Wude period of the Tang Dynasty, was deeply favored by the Crown Prince Li Jiancheng. After the Crown Prince died, many of his former followers fled. Feng Li lamented: "How can those who have received his favor when the Crown Prince was alive, flee and seek refuge after the Crown Prince's death?"