MacKenna-Plotinus: principle of measure

And, further, these Civic Virtues – measured and ordered themselves and acting as a principle of measure to the Soul which is as Matter to their forming – are like to the measure reigning in the over-world, and they carry a trace of that Highest Good in the Supreme; for, while utter measurelessness is brute Matter and wholly outside of Likeness, any participation in Ideal-Form produces some corresponding degree of Likeness to the formless Being There. And participation goes by nearness: the Soul nearer than the body, therefore closer akin, participates more fully and shows a godlike presence, almost cheating us into the delusion that in the Soul we see God entire. Enneads   I,2,

We may be told that neither Time nor Place is present in a subject. But if the definition of Time as the measure of Motion be regarded as denoting something measured, the "measure" will be present in Motion as in a subject, while Motion will be present in the moved: if, on the contrary, it be supposed to signify a principle of measurement, the "measure" will be present in the measurer. Enneads VI,3,