In connection with this he tells a story that one of his friends told him. An insane man was being transported in a private compartment in a certain place in Italy, but through some mistake another traveler was put in the same compartment. The insane man murdered his fellow passenger. Thus he identifies himself with this insane person and bases his right so to do upon a compulsive idea which was then torturing him, namely, he must "do away with all persons who knew of his failings." But then he himself finds a better motivation which gave rise to the dream. The day before, in the theatre, he again saw the girl whom he had expected to marry but whom he had left because she had given him cause for jealousy. With a capacity for intense jealousy such as he has, he would really be insane if he married. In other words, he considers her so untrustworthy that out of jealousy he would have to strike dead all the persons who stood in his way. Going through a series of rooms, of compartments in this case, we have already learned to recognize as the symbol of marriage (the opposite of monogamy). In connection with the train stopping in the open country and his fear of an accident, he tells the following: Once, when he was traveling in a train and it came to a sudden stop outside of a station, a young lady in the compartment remarked that perhaps there was going to be a collision, and that in that case the best precaution would be to pull one's legs up. But this "legs up" had also played a role in the many walks and excursions into the open which he had taken with the girl in that happy period in their first love. Thus it is a new argument for the idea that he would have to be crazy in order to marry her now. But from my knowledge of the situation I can assume with certainty that the wish to be as crazy as that nevertheless exists in him. THIRTEENTH LECTURE THE DREAM _Archaic Remnants and Infantilism in the Dream_ Let us revert to our conclusion that the dream-work, under the influence of the dream censorship, transforms the latent dream thoughts into some other form of expression. The latent thoughts are no other than the conscious thoughts known to us in our waking hours; the new mode of expression is incomprehensible to us because of its many-sided features. We have said it extends back to conditions of our intellectual development which we have long progressed beyond, to the language of pictures, the symbol-representations, perhaps to those conditions which were in force before the development of our language of thought. So we called the mode of expression of the dream-work the archaic or regressive.