e of the pleasures which innately appeal to all mankind and which
many pursue. The longing for these recurs from time to time. The mind
dwells on them, the imagination is excited and weaves a fabric of
pictures, thoughts, and emotions which thus become associated into a
complex. There may be a rebellion and "kicking against the pricks" and
thereby a liberation of the emotional force that impresses a stronger
organization on the whole process. The recurrence of such a complex is
one form of what we call a "mood," which has a distinctly emotional tone
of its own. The revival of this feeling tone tends to revive the
associated ideas and vice versa. Such a feeling-idea complex is often
spoken of as "a side to one's character," to which a person may from
time to time give play. Or the converse of this may hold, and a person
who devotes his life to the lighter enjoyments may have aspirations and
longings for more serious pursuits, and in this respect the imagination
may similarly build up a complex which may express itself in a mood.
Thus a person is often said to have "many sides to his character," and
exhibits certain alternations of personality which may be regarded as
normal prototypes of those which occur as abnormal states.

Most of what has been said about the formation of complexes is a
statement of commonplace facts, and I would not repeat it here were it
not that, in certain abnormal conditions, disposition, subject, and
other complexes, though loosely organized, often play an important part.
This is not the place to enter into an explanation of dissociated
personality, but in such conditions we sometimes find that disposition
complexes, for instance, come to the surface and displace or substitute
themselves for the other complexes which make up a personality. A
complex which is only a mood or a "side of the character" of a normal
individual may, in conditions of dissociation, become the main, perhaps
sole, complex and chief characteristic of the new personality. In Miss
Beauchamp, for instance, the personality known as BI was made up almost
entirely of the religious and ethical ideas which formed one side of the
original self. In the personality known as Sally we had for the most
part the complex which represented the enjoyment of youthful pleasures
and sports, the freedom from conventionalities and artificial restraints
generally imposed by duties and responsibilities. In BIV the complex
represented the ambitions a