A General Introduction to Psychoanalysis · Sigmund Freud
THE DREAM
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.
Text from Project Gutenberg, public domain in the United States.