《北史·列传·卷十三》
太武帝即位，认为刘洁是个像国家的柱石一样的奇才，委以重任。
太武即位，奇其有柱石用，委以大任。
When Emperor Taiwu acceded to the throne, he considered Liu Jie to be a great talent who was like the mainstay of the state and entrusted him with heavy responsibilities.