Now while these two are coalescents, having their existence in common, and are never apart, still the unity they form is two-sided; there is Intellectual-Principle as against Being, the intellectual agent as against the object of intellection; we consider the intellective act and we have the Intellectual-Principle; we think of the object of that act and we have Being.
Such difference there must be if there is to be any intellection; but similarly there must also be identity [since, in perfect knowing, subject and object are identical.]
Thus the Primals [the first “Categories”] are seen to be: Intellectual-Principle; Existence; Difference; Identity: we must include also Motion and Rest: Motion provides for the intellectual act, Rest preserves identity as Difference gives at once a Knower and a Known, for, failing this, all is one, and silent.
So too the objects of intellection [the ideal content of the Divine Mind] — identical in virtue of the self-concentration of the principle which is their common ground — must still be distinct each from another; this distinction constitutes Difference.
The Intellectual Kosmos thus a manifold, Number and Quantity arise: Quality is the specific character of each of these ideas which stand as the principles from which all else derives.