《贞观政要·卷九·论征伐》
然而陛下英明神勇，是隋代的君主无法相比的。可是，士兵们一旦渡过辽河，必须速战速决，万一有点闪失，不仅无法向远方异族显示朝廷的神威，陛下必定因此更加生气，再次兴师动众。
然陛下神武英声，不比周、隋之主，兵若渡辽，事须克捷，万一不获，无以威示远方，必更发怒，再动兵众。
However, Your Majesty is heroic and brave, and he is incomparable to the monarchs of the Sui Dynasty. However, once the soldiers cross the Liao River, they must fight quickly and decisively. If there is any slight mishap, not only will they not be able to show the might of the imperial court to the distant aliens, but Your Majesty will surely be even more angry and mobilize troops again.