will be discussed later. The dream process has now terminated the second
part of its repeatedly impeded course. The first part expended itself
progressively from the unconscious scenes or phantasies to the
foreconscious, while the second part gravitates from the advent of the
censor back to the perceptions. But when the dream process becomes a
content of perception it has, so to speak, eluded the obstacle set up in
the Forec. by the censor and by the sleeping state. It succeeds in
drawing attention to itself and in being noticed by consciousness. For
consciousness, which means to us a sensory organ for the reception of
psychic qualities, may receive stimuli from two sources--first, from the
periphery of the entire apparatus, viz. from the perception system, and,
secondly, from the pleasure and pain stimuli, which constitute the sole
psychic quality produced in the transformation of energy within the
apparatus. All other processes in the system, even those in the
foreconscious, are devoid of any psychic quality, and are therefore not
objects of consciousness inasmuch as they do not furnish pleasure or
pain for perception. We shall have to assume that those liberations of
pleasure and pain automatically regulate the outlet of the occupation
processes. But in order to make possible more delicate functions, it was
later found necessary to render the course of the presentations more
independent of the manifestations of pain. To accomplish this the Forec.
system needed some qualities of its own which could attract
consciousness, and most probably received them through the connection of
the foreconscious processes with the memory system of the signs of
speech, which is not devoid of qualities. Through the qualities of this
system, consciousness, which had hitherto been a sensory organ only for
the perceptions, now becomes also a sensory organ for a part of our
mental processes. Thus we have now, as it were, two sensory surfaces,
one directed to perceptions and the other to the foreconscious mental
processes.