Plotinos: Complete Works, v. 2 In Chronological Order,...

2. As to matter, we shall have to examine whether it be something actually, while simultaneously it potentially is the shapes it receives; or whether it be nothing at all actually. Everything else of which we predicate potentiality passes on to actuality on receiving its form, and remaining the same. We may call a statue an actual statue, thus contrasting with it a potential statue; but an actual statue will not be implied by the metal which we called the potential statue. Consequently, what exists potentially does not become what exists actually; but from what was previously a potential (statue) proceeds what later is an actual (statue). Indeed, what exists actually is the compound, and not the matter; it is the form added to matter; this occurs when there is produced another being; when, for example, from the metal is made a statue; for the statue exists by this very being something other than the metal; namely, the compound.17