the motive for this interpretation which has been left undecided by the
authorities. The interpretation follows in such a manner that the
perceived object is rendered harmless as a sleep disturber and becomes
available for the wish-fulfillment. Though we do not admit as special
sources of the dream the subjective state of excitement of the sensory
organs during sleep, which seems to have been demonstrated by Trumbull
Ladd, we are nevertheless able to explain this excitement through the
regressive revival of active memories behind the dream. A modest part in
our conception has also been assigned to the inner organic sensations
which are wont to be taken as the cardinal point in the explanation of
the dream. These--the sensation of falling, flying, or inhibition--stand
as an ever ready material to be used by the dream-work to express the
dream thought as often as need arises.

That the dream process is a rapid and momentary one seems to be true for
the perception through consciousness of the already prepared dream
content; the preceding parts of the dream process probably take a slow,
fluctuating course. We have solved the riddle of the superabundant dream
content compressed within the briefest moment by explaining that this is
due to the appropriation of almost fully formed structures from the
psychic life. That the dream is disfigured and distorted by memory we
found to be correct, but not troublesome, as this is only the last
manifest operation in the work of disfigurement which has been active
from the beginning of the dream-work. In the bitter and seemingly
irreconcilable controversy as to whether the psychic life sleeps at
night or can make the same use of all its capabilities as during the
day, we have been able to agree with both sides, though not fully with
either. We have found proof that the dream thoughts represent a most
complicated intellectual activity, employing almost every means
furnished by the psychic apparatus; still it cannot be denied that these