God is therefore truly the Father, inasmuch as He is Father
of truth; He does not create the Son from outside Himself, but generates Him
from His own substance. That is to say, being wise, He generates Wisdom, being
just, Justice, being eternal, the Eternal, being immortal, the Immortal, being
invisible, the Invisible. Because He is Light, He generates Brightness, and
because He is Mind, the Word.
--Rufinus, Commentary
on the Apostles’ Creed, 4.
