《隋书·列传·卷二十四》
而且我听说，自古以来，每朝每代都有动乱，贼臣逆子，没哪个朝代没有。
且闻之，自古代有屯剥，贼臣逆子，无世无之。
Moreover, I have heard that since ancient times, there have been turmoil in every dynasty and every generation, and rebellious ministers and treacherous sons, and there has been no dynasty without them.