192. That these degrees are homogeneous, that is, of the same character and nature, appears from what has just been said. The motor fibers of muscles, least, larger, and largest, are homogeneous. Woody filaments, from the least to the composite formed of these, are homogeneous. So likewise are parts of stones and metals of every kind. The organic substances which are receptacles and abodes of thoughts and affections, from the most simple to their general aggregate which is the brain, are homogeneous. The atmospheres, from pure ether to air, are homogeneous. The degrees of heat and light in series, following the degrees of atmospheres, are homogeneous, therefore the degrees of love and wisdom are also homogeneous. Things which are not of the same character and nature are heterogeneous, and do not harmonize with things homogeneous; thus they cannot form discrete degrees with them, but only with their own, which are of the same character and nature and with which they are homogeneous.