421. "To this it should be added that men who from things visible in the world, have so confirmed themselves in favor of nature that they became atheists, have been seen by me in the spiritual world. Seen in spiritual light, their understanding was open below but closed above, and this because in heir thought they had looked downwards to the earth and not upwards to heaven. Above their sensual, Which is the lowest part of the understanding, appeared, as it were, a veil. With some it was flashing from infernal fire, with others it was black as soot, and with still others, livid as a corpse. Let every one, therefore, beware of confirmations in favor of nature. Let him confirm himself in favor of the Divine; there is no lack of material.