When one speaks of good things, one either designates objects which are
such by themselves, or asserts that the good is their attribute. If
one designate the goods of the first order,[22] one is speaking of the
first Hypostasis, or rank of existence; if one designate the things of
which the good is the attribute, this implies the existence of a nature
of the good which has been attributed to them, or which produces this
characteristic within them, or which is the Good in itself, or which,
producing the good, nevertheless dwells in its own nature. Likewise,
when, in connection with (beings), we speak of a decad, (or, group of
ten), one is either referring to the Decad in itself, or, referring
to the things of which the decad is an attribute, one is forced to
recognize the existence of a Decad in itself, whose being is that of a
decad. Consequently, the conferring of the name "decad" implies either
that these (beings) are the Decad in itself, or above them in another
Decad whose being is that of being a Decad in itself.