《论衡·卷二十九·案书篇》
卿判决案件，狱吏断定疑案，是非无法决断，曲直无法分清，世人必然会认为卿和狱吏不称职。
卿决疑讼，狱定嫌罪，是非不决，曲直不立，世人必谓卿狱之吏才不任职。
If your honor tries cases and the jailer decides doubts, but right and wrong cannot be determined and crookedness and straightness cannot be distinguished, the world will inevitably think that you and the jailer are incompetent.