《三国志·蜀书·蒋琬费祎姜维传》
于是我与费伊等人商议，认为凉州胡人地区是要塞之道，进退都有依靠，是敌人很重视的地方。况且羌人胡人都非常仰慕汉朝，又有过去部队进入羌族部落，郭槐失败逃走，计算其中的得失，认为凉州是最重要的事情，应该任命姜维为凉州刺史。
辄与费祎等议，以凉州胡塞之要，进退有资，贼之所惜；且羌、胡乃心思汉如渴，又昔偏军入羌，郭淮破走，算其长短，以为事首，宜以姜维为凉州刺史。
Therefore, I have discussed with Fei Yi and others and believe that the Hu people's area of Liangzhou is a key pass, with support both for advancing and retreating, which is a place that the enemy values very much. Moreover, the Qiang and Hu people all greatly admire the Han Dynasty. In the past, an army entered the Qiang tribe, Guo Huai fled in defeat. Weighing up the advantages and disadvantages, we believe that Liangzhou is the most important thing and that Jiang Wei should be appointed the Governor of Liangzhou.