The brain has its discharges, and each of the internal organs has its excretions. Some of these serve uses, such as the salivas and biles. Some are cast out as wastes through the pores of the skin and other emunctories, such as the nostrils. There were certain ones among the excremental spirits of the brain, toward the front rather high up, a little at a distance at the right side of the nose. Whenever they were let go, they brought down spiritual things to earthly ones, and defiled them according to their practice in life, beginning from spiritual qualities and bringing them down to earthly things, and thereby defiling them. The filthier these things were, the more they were sent back to themselves.