Summary

Portrait of Plotinus Plotinus Enneads — Matter in Its Two Kinds

Matter, in sum, is necessary to quality and to quantity, and, therefore, to body.
It is, thus, no name void of content; we know there is such a base, invisible and without bulk though it be.
If we reject it, we must by the same reasoning reject qualities and mass: for quality, or mass, or any such entity, taken by itself apart, might be said not to exist. But these do exist, though in an obscure existence: there is much less ground for rejecting Matter, however it lurk, discerned by none of the senses.
Source: Wikisource

Portrait of Plotinus Plotinus Enneads — Matter in Its Two Kinds

The imaging of Quantity upon Matter by an outside power is not more surprising than the imaging of Quality; Quality is no doubt a Reason-Principle, but Quantity also- being measure, number- is equally so.
9 But how can we conceive a thing having existence without having magnitude?
We have only to think of things whose identity does not depend on their quantity- for certainly magnitude can be distinguished from existence as can many other forms and attributes.
Source: Wikisource

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