Both these attributes, uniformity and symmetry, being the determinations of the form and unity of external appearance, are mainly applicable to _distinctions in size._ For it stands to reason that what is expressly posited as external rather than truly immanent determination is generally a quantitative[242] determination, whereas the qualitative fixes the inherent character of anything. Consequently that which is assumed only to affect the external appearance cannot be concerned with the changes which are found in the qualitative aspect. Size, on the other hand, and its alteration regarded merely as size, is for the qualitative determination, when it is unable to assert itself in terms of measure, an indifferent determination. That is to say, measure is quantity, precisely in so far as it can give to itself an aspect which qualifies it, and thereby a qualitative determination is united to the purely quantitative one. As thus explained[243] uniformity and symmetry are merely restricted to the determinations of size and their uniform appearance or arrangement of differences in symmetrical order. Further inquiry will show us that this due co-ordination of size is as applicable to the forms of organic life as it is to those of inorganic Nature. The human organism is, for example, at least in a certain degree both uniform and symmetrical. We have two eyes, two arms, two legs, similar hip-joints, shoulder-blades, and so on. Of other portions of the body the reverse is the case. We find no conspicuous uniformity in the heart, lungs, bowels, or liver. The question arises what precisely constitutes the difference here. The side on which uniformity, whether of size, form, or position mainly asserts itself, is obviously the aspect of the organism viewed from the outside. The uniform and symmetrical determination, in complete conformity with what we should expect, is most apparent where the fact as objectively determined is itself the external envisagement itself, and carries with it the least impression of inherent life. The reality, which is most constant to this pure externality, rests satisfied with the abstract unity congenial to it. Within the organism, on the contrary, where we find the heart of the life-process, and still more openly in the medium of untrammelled reason uniformity gives way before the subjective unity of life. Nature is, no doubt, in its opposition to mind, a determinate existence external and independent; but even in her we find that uniformity only pre-eminently asserts itself where externality is the predominant principle.