consciousness during the night under the domination of the compromise
formations.

_"Flectere si nequeo superos, Acheronta movebo."_

At any rate the interpretation of dreams is the _via regia_ to a
knowledge of the unconscious in the psychic life.

In following the analysis of the dream we have made some progress toward
an understanding of the composition of this most marvelous and most
mysterious of instruments; to be sure, we have not gone very far, but
enough of a beginning has been made to allow us to advance from other
so-called pathological formations further into the analysis of the
unconscious. Disease--at least that which is justly termed
functional--is not due to the destruction of this apparatus, and the
establishment of new splittings in its interior; it is rather to be
explained dynamically through the strengthening and weakening of the
components in the play of forces by which so many activities are
concealed during the normal function. We have been able to show in
another place how the composition of the apparatus from the two systems
permits a subtilization even of the normal activity which would be
impossible for a single system.

[1] _Cf._ the significant observations by J. Bueuer in our _Studies on
Hysteria_, 1895, and 2nd ed. 1909.

[2] Here, as in other places, there are gaps in the treatment of the
subject, which I have left intentionally, because to fill them up would
require on the one hand too great effort, and on the other hand an
extensive reference to material that is foreign to the dream. Thus I