《隋书·列传·卷十五》
我自以为心里诚实，不避嫌疑，不用文书约束，以至被人怀疑，这是我的第三个罪过。
牵率愚诚，无顾形迹，不恃文书约束，至令为物所疑，臣之罪三也。
I considered myself to be honest inside and did not avoid suspicion. I chose not to use documents as constraints, which led to being suspected. That was my third fault.