5142. I spoke with those to whom the teeth correspond, who were those who have expended considerable thought upon the ultimate parts of the world and on the terrestrial particles. They supposed their origin was from collision, and that thence they became rounded. Since these have sought the delight of their life in lowest things, they corresponded to the teeth they also inflowed into my teeth, manifestly; and, because I did not hold an opinion in accordance with theirs, therefore my teeth were inwardly corroded by the pressure of this influx, and a heavy pain resulted. They were a little above the forehead: they were heard there.