《旧五代史·后周·太祖纪三》
太祖召见他们，说： 惩罚残暴邪恶，奖励忠诚和顺，是天下同理。
帝召见谓之曰： 夫恶凶邪，奖忠顺，天下一也。
The Taizu summoned them and said: Punishing the cruel and evil and rewarding the loyal and obedient is the same principle in the world.