《汉书·志·艺文志》
《诗经》上所记载的熊照虺蛇众鱼施旗的梦，写明是大人的占卜，用来考察吉凶，大致参照卜筮。
而《诗》载熊罴虺蛇众鱼旐旟之梦，著明大人之占，以考吉凶，盖参卜筮。
The dreams of bears, snakes, fish, and flags recorded in the Book of Poetry were explicitly analyzed for their auspiciousness or inauspiciousness, largely based on divination.