Obj. 3: Further, faith is a spiritual light. Now something is seen
under every light. Therefore faith is of things seen.

Obj. 4: Further, "Every sense is a kind of sight," as Augustine
states (De Verb. Domini, Serm. xxxiii). But faith is of things heard,
according to Rom. 10:17: "Faith . . . cometh by hearing." Therefore
faith is of things seen.

_On the contrary,_ The Apostle says (Heb. 11:1) that "faith is the
evidence of things that appear not."

_I answer that,_ Faith implies assent of the intellect to that which
is believed. Now the intellect assents to a thing in two ways. First,
through being moved to assent by its very object, which is known
either by itself (as in the case of first principles, which are held
by the habit of understanding), or through something else already
known (as in the case of conclusions which are held by the habit of
science). Secondly the intellect assents to something, not through
being sufficiently moved to this assent by its proper object, but
through an act of choice, whereby it turns voluntarily to one side
rather than to the other: and if this be accompanied by doubt or fear
of the opposite side, there will be opinion, while, if there be
certainty and no fear of the other side, there will be faith.

Now those things are said to be seen which, of themselves, move the
intellect or the senses to knowledge of them. Wherefore it is evident
that neither faith nor opinion can be of things seen either by the
senses or by the intellect.

Reply Obj. 1: Thomas "saw one thing, and believed another" [*St.