its who desire to deceive man for they are
permitted to know certain things about temporal affairs." Wherefore
he concludes: "Thus a good Christian should beware of astrologers,
and of all impious diviners, especially of those who tell the truth,
lest his soul become the dupe of the demons and by making a compact of of
partnership with them enmesh itself in their fellowship."

This suffices for the Reply to the Third Objection.
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SIXTH ARTICLE [II-II, Q. 95, Art. 6]

Whether Divination by Dreams Is Unlawful?

Objection 1: It would seem that divination by dreams is not unlawful.
It is not unlawful to make use of divine instruction. Now men are
instructed by God in dreams, for it is written (Job 33:15, 16): "By a
dream in a vision by night, when deep sleep falleth upon men, and
they are sleeping in their beds, then He," God to wit, "openeth the
ears of men, and teaching instructeth them in what they are to
learn." Therefore it is not unlawful to make use of divination by
dreams.

Obj. 2: Further, those who interpret dreams, properly speaking, make
use of divination by dreams. Now we read of holy men interpreting
dreams: thus Joseph interpreted the dreams of Pharaoh's butler and of
his chief baker (Gen. 40), and Daniel interpreted the dream of the
king of Babylon (Dan. 2, 4). Therefore divination by dreams is not
unlawful.

Obj. 3: Further, it is unreasonable to deny the common experiences of
men. Now it is the experience of all that dreams are significative of
the future. Therefore it is useless to deny the efficacy of dreams
for the purpose of divination, and it is lawful to listen to them.

_On the contrary,_ It is written (Deut. 18:10): "Neither let there be
found among you any one that . . . observeth dreams."

_I answer that,_ As stated above (AA. 2, 6), divination is
superstitious and unlawful when it is based on a false opinion.
Wherefore we must consider what is true in the matter of foreknowing
the future from dreams. Now dreams are sometimes the cause of future
occurrences; for instance, when a person's mind becomes anxious
through what it has seen in a dream and is thereby led to do
something or avoid something: while sometimes dreams are signs of
future happenings, in so far as they are referable to some common
cause of both dreams and future occurrences, and in this way the
future is frequently known from dreams. We must, then, consider what
is the cause of dreams, and whethe