This may or may not be the true subconscious process and the correct interpretation of the dream. But it is one possible and logical interpretation based upon the actually found antecedent experiences and associative memories of the dreamer. Now it so happens that this interpretation and that of other dreams[114] which I endeavored to trace to antecedent experiences have been warmly challenged by certain clinicians because the inferred causal factors were not found to be antecedent repressed sexual wishes. It is insisted on theoretical grounds that the content of the dreams plainly indicated that there must have been such wishes and that if these had been found this dream would have been unfolded as a logical symbolical fulfilment of a sexual wish. Which interpretation is correct is inconsequential for our present purpose. The controversy only relates to the universality of the sexual theory of dreams. The point is that this difference in interpretation shows the possibility of error in the determination of the causal factor and the subconscious process by clinical methods. The dream may be logically related to two or more antecedent experiences and we have no criterion of which is the correct one. To insist upon one or the other savors of pure dogmatism.[115] Indeed, the justification for the postulation in a dream of any subconscious process in the last analysis depends upon the soundness of the postulation of the antecedent experience as the causal factor. If this factor falls to the ground the subconscious process falls with it. The second point to which this discussion leads us is that the latitude of interpretation allowed by the method of analysis has given rise to different views as to the specific character of the subconscious process found in many dreams. According to the theory of Freud, to whose genius we are indebted for the discovery of this process, it is almost always a sexual wish and the dream is always the imaginary, even though cryptic, fulfilment of that wish. On the other hand, as a result of my own studies, if I may venture to lay weight upon them, I have been forced to the conclusion that _a dream may be the symbolical expression of almost any thought_ to which strong emotional tones with their impulsive forces have been linked, particularly anxieties, apprehensions, sorrows, beliefs, wishes, doubts, and scruples, which function subconsciously in the dream. It may be a solution of unsolved problems with which the mind has been occupied,[116] just as in the waking state a mathematical or other problem may be solved subconsciously. In some subjects the problem is particularly apt to be one involving a conflict between opposing impulses, therefore one which has troubled the dreamer.[117]