xcitement, we may now assume that all the
connecting ways leading from other functions to sexuality must also be
passable in the reverse direction. For example, if the lip zone, the
common possession of both functions, is responsible for the fact that
the sexual gratification originates during the taking of nourishment,
the same factor offers also an explanation for the disturbances in the
taking of nourishment if the erogenous functions of the common zone are
disturbed. As soon as we know that concentration of attention may
produce sexual excitement, it is quite natural to assume that acting on
the same path, but in a contrary direction, the state of sexual
excitement will be able to influence the availability of the voluntary
attention. A good part of the symptomatology of the neuroses which I
trace to disturbance of sexual processes manifests itself in
disturbances of the other non-sexual bodily functions, and this hitherto
incomprehensible action becomes less mysterious if it only represents
the counterpart of the influences controlling the production of the
sexual excitement.

However the same paths through which sexual disturbances encroach upon
the other functions of the body must in health be supposed to serve
another important function. It must be through these paths that the
attraction of the sexual motive-powers to other than sexual aims, the
sublimation of sexuality, is accomplished. We must conclude with the
admission that very little is definitely known concerning the paths
beyond the fact that they exist, and that they are probably passable in
both directions.

[1] For it is really impossible to have a correct knowledge of the part
belonging to heredity without first understanding the part belonging to
the infantile.

[2] This assertion on revision seemed even to myself so bold that I
decided to test its correctness by again reviewing the literature. The
result of this second review did not warrant any change in my original
statement. The scientific elaboration of the physical as well as the
psychic phenomena of the infantile sexuality is still in its initial
stages. One author (S. Bell, "A Preliminary Study of the Emotions of
Love Between the Sexes," American Journal of Psychology, XIII, 1902)
says: "I know of no scientist who has given a careful analysis of the
emotion as it is seen in the adolescent." The only attention given to
somatic sexual manifestations occurring before the age of puberty was i