It must not be assumed that all dreams are determined by a subconscious process or that all are symbolic. On the contrary, from evidence in hand, there is reason to believe that some dreams have substantially the same mechanism as waking imagination subject to the limitations imposed by the existing dissociation of consciousness during sleep. Just as, in the waking state, thoughts may or may not be determined by subconscious processes, so in the sleeping state. We know too little about the mechanisms of thought to draw wide generalizations or to dogmatize. Footnote 105: “For two or three days previously I had been trying to write some verses, and had been reading a good deal of poetry. I had been thinking in rhythm. I had also been under considerable nervous and emotional strain for some little time in reference to the facts portrayed in the verse.” Footnote 106: By this is meant “thoughts” of which she was not aware. Numerous observations on this subject have disclosed such subconscious ideas in connection with other phenomena. This corresponds with the testimony of other subjects previously cited. (Lecture VI.) Footnote 107: As a theory of the mechanism of the vision I would suggest that it was the emergence of the secondary visual images belonging to the subconscious ideas. Footnote 108: See page 102. Also Prince: The Mechanism and Interpretation of Dreams. _Jour. Abnormal Psychology_. Oct.-Nov., 1910. G. A. Waterman: Dreams as a Cause of Symptoms. Ibid. Oct.-Nov., 1910. Footnote 109: I base this theory on other observations where coconscious images or “visions” of scenes occurred. When these images emerge into consciousness the subject experienced a vision. Footnote 110: The Dissociation, p. 332. Footnote 111: The Dissociation of a Personality, p. 330. Footnote 112: Mechanism and Interpretation of Dreams, _Journal Abnormal Psychology_, Oct.-Nov., 1910. Footnote 113: The symbolic expression of beliefs and symbolic answers to doubts and scruples is quite common in another type of symbolism, viz., visions. Religious and political history is replete with examples. Footnote 114: _Loc. cit._ Footnote 115: It has been answered that experience in a large number of cases shows that dreams always can be related logically to sexual experiences. To this it may be answered they can also in an equal number of cases, indeed in many of these same cases, be related to non-sexual experiences. Footnote 116: _Loc. cit._ It is possible, however, that sometimes the problem has been solved subconsciously in the waking state, the answer then appearing in the dream. Footnote 117: Here we find an analogy with certain allied phenomena—the visions and voices experienced as phenomena of sudden religious conversion. Footnote 118: Francis Joseph and His Sir Horace Rumbold. Page 151. (Italics mine.) Footnote 119: