《太平广记·卷八十八·异僧二》
佛图澄接着劝谏说： 为王者以德化遍施宇内则四方献出灵物表示祥瑞，人政治乃弊道消则乖象丛生，自然现象的呈现，伴随而来的是人间的吉凶福祸；这是古往今来的常理，天与人的明鉴。 
澄因谏曰： 夫王者德化洽于宇内则四灵表瑞，政弊道消则彗孛见于上。恒象著见，体咎随行。斯乃古今之常理，天人之明戒。 
Fotucheng went on to persuade him, "If a king behaves virtuously and his influence spreads throughout the whole country, then rare treasures will be offered as auspicious signs from all corners of the country. When politics is corrupt and evil, abnormal phenomena will occur. The appearance of natural phenomena corresponds to the fortunes or misfortunes of human beings. This is the common principle of all ages, the manifest evidence of Heaven and humanity."