are the proper objects of sight. But in sacred science, all things are
treated of under the aspect of God: either because they are God
Himself or because they refer to God as their beginning and end. Hence
it follows that God is in very truth the object of this science. This
is clear also from the principles of this science, namely, the
articles of faith, for faith is about God. The object of the
principles and of the whole science must be the same, since the whole
science is contained virtually in its principles. Some, however,
looking to what is treated of in this science, and not to the aspect
under which it is treated, have asserted the object of this science to
be something other than God--that is, either things and signs; or the
works of salvation; or the whole Christ, as the head and members. Of
all these things, in truth, we treat in this science, but so far as
they have reference to God.

Reply Obj. 1: Although we cannot know in what consists the
essence of God, nevertheless in this science we make use of His
effects, either of nature or of grace, in place of a definition, in
regard to whatever is treated of in this science concerning God; even
as in some philosophical sciences we demonstrate something about a
cause from its effect, by taking the effect in place of a definition
of the cause.

Reply Obj. 2: Whatever other conclusions are reached in this
sacred science are comprehended under God, not as parts or species or
accidents but as in some way related to Him.
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EIGHTH ARTICLE [I, Q. 1, Art. 8]