else, having originated in an individual as a compromise between conflicting psychic forces it remains incomprehensible to the person himself and has therefore altogether no interest for anybody else. Not only does the dream find it unnecessary to place any value on intelligibleness, but it must even guard against being understood, as it would then be destroyed; it can only exist in disguised form. For this reason the dream may make use freely of the mechanism that controls unconscious thought processes to the extent of producing undecipherable disfigurements. Wit, on the other hand, is the most social of all those psychic functions whose aim is to gain pleasure. It often requires three persons, and the psychic process which it incites always requires the participation of at least one other person. It must therefore bind itself to the condition of intelligibleness; it may employ disfigurement made practicable in the unconscious through condensation and displacement, to no greater extent than can be deciphered by the intelligence of the third person. As for the rest, wit and dreams have developed in altogether different spheres of the psychic life, and are to be classed under widely separated categories of the psychological system. No matter how concealed the dream is still a wish, while wit
