which are used in this manner there are of course many which regularly, or almost regularly, mean the same thing. Only it is necessary to keep in mind the curious plasticity of psychic material. Now and then a symbol in the dream content may have to be interpreted not symbolically, but according to its real meaning; at another time the dreamer, owing to a peculiar set of recollections, may create for himself the right to use anything whatever as a sexual symbol, though it is not ordinarily used in that way. Nor are the most frequently used sexual symbols unambiguous every time.

After these limitations and reservations I may call attention to the following: Emperor and Empress (King and Queen) in most cases really represent the parents of the dreamer; the dreamer himself or herself is the prince or princess.