3221. Angelic discussions are sometimes represented by means of clouds, and by the forms, colours, movements, and transpositions of them. Affirmations of truth are represented by bright and rising clouds, negations by dark and lowering clouds, while affirmations of falsity are represented by gloomy and black clouds. Agreement and disagreement is represented by various fusings together or detachments of clouds from one another; and these things occur in a dark-blue sky, as it is at night.