For every one tries to render as the property of a thing something that belongs to it either naturally, as being two footed belongs to man, or actually, as having four fingers belongs to a particular man, or specifically, as consisting of most rarefied particles belongs to fire, or without qualification, as living to living being, or in virtue of something else, as being prudent to the soul, or as the primary subject, as being prudent to the rational faculty, or because the thing is in a certain state, as being incontrovertible by argument belongs to a scientist (for simply and solely by reason of his being in a certain state will he be incontrovertible by argument), or because it is the state possessed by something, as being incontrovertible by argument belongs to science, or because it is partaken of, as perceiving belongs to animal (for other things as well perceive, eg man, but they perceive because they partake of animal), or because it partakes of something else, as living belongs to a particular kind of living being.