iever. For he would not believe unless, on the
evidence of signs, or of something similar, he saw that they ought to
be believed.

Reply Obj. 3: The light of faith makes us see what we believe. For
just as, by the habits of the other virtues, man sees what is
becoming to him in respect of that habit, so, by the habit of faith,
the human mind is directed to assent to such things as are becoming
to a right faith, and not to assent to others.

Reply Obj. 4: Hearing is of words signifying what is of faith, but
not of the things themselves that are believed; hence it does not
follow that these things are seen.
_______________________

FIFTH ARTICLE [II-II, Q. 1, Art. 5]

Whether Those Things That Are of Faith Can Be an Object of Science
[*Science is certain knowledge of a demonstrated conclusion through
its demonstration]?

Objection 1: It would seem that those things that are of faith can be
an object of science. For where science is lacking there is
ignorance, since ignorance is the opposite of science. Now we are not
in ignorance of those things we have to believe, since ignorance of
such things savors of unbelief, according to 1 Tim. 1:13: "I did it
ignorantly in unbelief." Therefore things that are of faith can be an
object of science.

Obj. 2: Further, science is acquired by reasons. Now sacred writers
employ reasons to inculcate things that are of faith. Therefore such
things can be an object of science.

Obj. 3: Further, things which are demonstrated are an object of
science, since a "demonstration is a syllogism that produces
science." Now certain matters of faith have been demonstrated by the
philosophers, such as the Existence and Unity of God, and so forth.
Therefore things that are of faith can be an object of science.

Obj. 4: Further, opinion is further from science than faith is, since
faith is said to stand between opinion and science. Now opinion and
science can, in a way, be about the same object, as stated in Poster.
i. Therefore faith and science can be about the same object also.

_On the contrary,_ Gregory says (Hom. xxvi in Evang.) that "when a
thing is manifest, it is the object, not of faith, but of
perception." Therefore things that are of faith are not the object of
perception, whereas what is an object of science is the object of
perception. Therefore there can be no faith about things which are an
object of science.

_I answer that,_ All science is derived from self-evident and
th