thus a heated substance can have something extraneous to heat added to
it, as whiteness, nevertheless absolute heat can have nothing else
than heat. Thirdly, because what is essential is prior to what is
accidental. Whence as God is absolute primal being, there can be in
Him nothing accidental. Neither can He have any essential accidents
(as the capability of laughing is an essential accident of man),
because such accidents are caused by the constituent principles of the
subject. Now there can be nothing caused in God, since He is the first
cause. Hence it follows that there is no accident in God.

Reply Obj. 1: Virtue and wisdom are not predicated of God and
of us univocally. Hence it does not follow that there are accidents in
God as there are in us.

Reply Obj. 2: Since substance is prior to its accidents, the
principles of accidents are reducible to the principles of the
substance as to that which is prior; although God is not first as if
contained in the genus of substance; yet He is first in respect to all
being, outside of every genus.
_______________________

SEVENTH ARTICLE [I, Q. 3, Art. 7]

Whether God Is Altogether Simple?

Objection 1: It seems that God is not altogether simple. For whatever
is from God must imitate Him. Thus from the first being are all
beings; and from the first good is all good. But in the things which
God has made, nothing is altogether simple. Therefore neither is God
altogether simple.