2283. Distinction between the Fact and Sin of Divination.—(a) The fact of divination—that is, the actual manifestation by evil spirits of things humanly unknowable—is not impossible, since the demons are far superior to man in intelligence and knowledge, and it is the teaching of revelation that they use their powers to mislead and seduce mankind. Their knowledge, however, does not extend to future contingencies, nor to the secrets of hearts, and their word cannot be relied on. A case of real communication by an evil spirit is that of the girl of Philippi possessed by a pythonical spirit (Acts, xiv. 16-18), and some think that the same can be said of the Witch of Endor (I Kings, xxvii. 7-25); but no doubt there have been many instances of divination in which the intervention of demons was only imaginary.
(b) The sin of divination is committed when one has the will to receive occult knowledge from forbidden sources, or uses the means to obtain knowledge from those sources, even though there be no communication or response on the part of the spirits of evil.
2284. Forms of Explicit Invocation.—Divination in which there is explicit invocation of the demon is of various kinds according to the medium through which instruction is given or expected.
(a) Thus, the medium is direct if it is an external sensible appearance representing the demon (_praestigium_) or an internal picture in the imagination or a dream containing his answer (oneiromancy).
(b) The medium is indirect and rational when it is a human being, dead or living. Divination through the evocation of the departed is known as necromancy, while that which is given through living possessed persons is called pythonism. Modern Spiritism partakes of the character of both necromancy (since the spirits of the departed are consulted) and pythonism (since persons supposed to be under the control of familiar spirits act as mediums).
(c) The medium is indirect and irrational when it is some solid body (such as iron, stone or crystal) in which figures or signs appear; idols from which oracles are received; tables or ouija boards from which answers are given by raps or writing; divining rods supposed to lead the way to any hidden person or thing, etc. (geomancy); or some liquid body (hydromancy), or air (aeromancy), or fire (pyromancy), or the entrails of sacrificial victims or natural prodigies, such as lightning (haruspicy). Here also may be mentioned the superstition of ordeal by fire, boiling water, combat, etc., once used to determine the guilt or innocence of an accused person.
2285. Forms of Implicit Invocation.—Divination in which there is only implicit invocation of evil spirits is manifold, just as the natural causes from which preternatural knowledge is expected are manifold. Among the principal forms are the following:
(a) that which is made from the human mind, when clairvoyance or clair-audience is employed. It is supposed that certain persons have the natural gift, at least when in a trance or hypnotic state, of perceiving what is done or said at a distance without any of the normal means of communication, and even of reading minds. This supposed inborn gift is sometimes called second sight or telepathy. Some authorities hold that there is sufficient evidence for vision at a distance as a sixth sense in certain individuals, especially among primitive peoples and persons bound by a tie of blood or intimate friendship. Moreover, many facts learned through telepathy seem to have been verified sufficiently to render telepathy probable. Accordingly, to believe telepathy or to practice it, excluding all superstition and invocation of demons, is not illicit.
(b) divination that is made from the human body in physiognomy, phrenology, and chiromancy. The physiognomist pretends that he is able to discover the hidden character, latent abilities or defects, secret thoughts, etc., by a study of the features or expression of the countenance. The phrenologist claims that he can read the mental and moral traits of a person from the bumps or prominences of the skull. The chiromantist, or palmist, promises to foretell the future, read the past, discover the present secret character and aptitudes of an individual from an inspection of the shape, lines and configuration of his hand and of the character of the lines and marks of his palms;
(c) divination that is made from non-human and necessary events in astrology. This pseudo-science gives predictions about the fortunes of an individual drawn from a study of his horoscope (i.e., the aspect of the heavenly bodies at the moment of his birth) and of certain rules of interpretation;