This book explains, in clear and accessible language, one of the most striking phenomena of our psychic life, fantasy or ghost (fantasme). What is a ghost? It is a small paperback novel that one carries with it all the time and can be opened in any place without anyone noticing, on the train, in the cafeteria and often in a loving relationship. It may happen that this inner fable becomes omnipresent and, without realizing it, interfere with our relationships with those around us. This is how many people live and die knowing that there was always a veil that distorted the reality of their emotional ties.