You may not be able to disregard the similarity which this examples bears to a pun, and it really has happened frequently that the dreamer's pun is attributed to the interpreter. There are still other examples in which it is not at all easy to decide whether one is dealing with a joke or a dream. But you will recall that the same doubt confronted us when we were dealing with slips of the tongue. A man tells us a dream of his, that his uncle, while they were sitting in the latter's _auto_mobile, gave him a kiss. He very quickly supplies the interpretation himself. It means "_auto_-eroticism," (a term taken from the study of the libido, or love impulse, and designating satisfaction of that impulse without an external object). Did this man permit himself to make fun of us and give out as a dream a pun that occurred to him? I do not believe so; he really dreamed it. Whence comes the astounding similarity? This question at one time led me quite a ways from my path, by making it necessary for me to make a thorough investigation of the problem of humor itself. By so doing I came to the conclusion that the origin of wit lies in a foreconscious train of thought which is left for a moment to unconscious manipulation, from which it then emerges as a joke. Under the influence of the unconscious it experiences the workings of the mechanisms there in force, namely, of condensation and displacement, that is, of the same processes which we found active in the dream work, and it is to this agreement that we are to ascribe the similarity between wit and the dream, wherever it occurs. The unintentional "dream joke" has, however, none of the pleasure-giving quality of the ordinary joke. Why that is so, greater penetration into the study of wit may teach you. The "dream joke" seems a poor joke to us, it does not make us laugh, it leaves us cold. Here we are also following in the footsteps of ancient dream interpretation, which has left us, in addition to much that is useless, many a good example of dream interpretation we ourselves cannot surpass. I am now going to tell you a dream of historical importance which Plutarch and Artemidorus of Daldis both tell concerning Alexander the Great, with certain variations. When the King was engaged in besieging the city of Tyre (322 B.C.), which was being stubbornly defended, he once dreamed that he saw a dancing satyr. Aristandros, his dream interpreter, who accompanied the army, interpreted this dream for him by making of the word _Satyros_, σἁ Τὑρος, "Thine is Tyre," and thus promising him a triumph over the city. Alexander allowed himself to be influenced by this interpretation to continue the siege, and finally captured Tyre. The interpretation, which seems artificial enough, was without doubt the correct one.