however, by no means confined to the individualizing
tendency to concentrate amorous attention upon some single characteristic
of the adult woman or man who is normally the object of sexual love. The
adult human being may not be concerned at all, the attractive object or
act may not even be human, not even animal, and we may still be concerned
with a symbol which has parasitically rooted itself on the fruitful site
of sexual emotion and absorbed to itself the energy which normally goes
into the channels of healthy human love having for its final end the
procreation of the species. Thus understood in its widest sense, it may be
said that every sexual perversion, even homosexuality, is a form of erotic
symbolism, for we shall find that in every case some object or act that
for the normal human being has little or no erotic value, has assumed such
value in a supreme degree; that is to say, it has become a symbol of the
normal object of love. Certain perversions are, however, of such great
importance on account of their wide relationships, that they cannot be
adequately discussed merely as forms of erotic symbolism. This is notably
the case as regards homosexuality, auto-erotism, and algolagnia, all of
which phenomena have therefore been separately discussed in previous
studies. We are now mainly concerned with manifestations which are more
narrowly and exclusively symbolical.

A portion of the field of erotic symbolism is covered by what Binet
(followed by Lombroso, Krafft-Ebing, and others) has termed "erotic
fetichism," or the tendency whereby sexual attraction is unduly exerted by
some special part or peculiarity of the body, or by some inanimate object
which has become associated with it. Such erotic symbolism of object
cannot, however, be dissociated from the even more important erotic
symbolism of process, and the two are so closely bound together that we
cannot attain a truly scientific view of them until we regard them broadly
as related parts of a common psychic tendency. If, as Groos asserts,[3] a
symbol has two chief meanings, one in which it indicates a physical
process which stands for a psychic process, and another in which it
indicates a part which represents the whole, erotic symbolism of act
corresponds to the first of these chief meanings, and erotic symbolism of
object to the other.

Although it is not impossible to find some germs of erotic symbolism in
animals, in its more pronounced manifestations it