《汉书·传·匡张孔马传》
《书经》说： 既然接受了天命，就应该实行德政，指的是实行德政来顺应上天。
《书》曰 天既付命正厥德 ，言正德以顺天也。
The Book of History says: "I have accepted the destiny of the sky, and I should practice virtue.", which means to practice virtue to follow the destiny of the sky.