Thus, a thing is fully explained by the clearing up of its cause. Why should there be eyebrows above the eye? That it may possess all that is implied in its being. Were these parts of the body given to man to protect him from dangers? That would be to establish within being a principle charged to watch over being. The things of which we speak are implied in the being that existed before them. Consequently, being contains within itself the cause which, if distinct from being, is nevertheless inseparable therefrom. All things are implied in each other[100]; taken together, they form the total, perfect and universal Being; their perfection is bound up with, and is inherent in their cause; thus a (creature's) "being," its "characteristic" (to ti ên einai), and its "cause" (why-ness) fall together. (Before asking an important question we must premiss that) in the intelligible world the cause that is complementary to a being is ultimately united to it. We must also premiss that, by virtue of its perfection, divine Intelligence contains the causes (as well as the beings[78]), so that it is only "a posteriori" that we observe that things are well regulated. If then the possession of senses, and indeed of particular ones, be implied in the form of man by the eternal necessity and perfection of divine Intelligence, then the intelligible Man was by no means mere intelligence, receiving the senses when descending into generation. (If then having senses be implied in the form of man), does not Intelligence incline towards the things here below? In what do these senses (which are attributed to the intelligible Man) consist? Are these senses the potentiality of perceiving sense-objects? But it would be absurd that, on high, man should from all eternity possess the potentiality of feeling, yet feel only here below, and that this potentiality should pass to actualization only when the soul became less good (by its union to the body). SUCH QUESTIONS DEMAND SCRUTINY OF THE INTELLIGIBLE MAN. 4. To answer these questions, we would have to go back to the nature of the intelligible Man. Before defining the latter, however, it would indeed be far better to begin by determining the nature of the sense-man, on the supposition that we know the latter very well, while perhaps of the former, we have only a very inexact notion. DIFFERENCE BETWEEN THE MAN KNOWN BY THE SENSES AND THE INTELLIGIBLE MAN.