《北史·列传·卷五十一》
宇文泰想改革政治，志在弘扬强国富民之道，所以苏绰能尽情发挥他的智慧才能。
周文方欲革易时政，务弘强国富人之道，故绰得尽其智能，赞成其事。
Yu Wentai wanted to reform politics, determined to promote the way of making the country prosperous and the people wealthy, so Su Chuo could fully display his wisdom and talent.