《元史·列传·卷六十二》
孟气度宏大，才略超人。三入中书省，关于民间利害知无不言，引古论今，言无不当。
孟宇量闳廓，材略过人，三入中书，民间利害，知无不言，引古证今，务归至当。
Li Meng was magnanimous, talented, and outstanding in his strategies. He served in the Central Secretariat three times. When it came to the interests of the people, he spoke fearlessly, citing ancient precedents and discussing current issues, and his words were always appropriate.