Using an original clinical research project, a group of analysts explores the changes correlated with the use of the French pronoun “on” in the analytical situation. Does the impersonal nature of its use reflect the possibility of a shift from the actual to fantasy? And, as a corollary to this question, how do exchanges within a group of analysts contribute to the psychic return in analysis of the analysable fantasies that they have talked about? Finally, how do the group, the colloquiums and writing promote the symbolizing expansion opened up by the use of this indefinite personal pronoun?