Rage and laughter are the feelings which allow us a clear view of reality (Lessing, "Minna Von Barnhelm", 1767). However, for the group to manage to put rage and laughter into practice constructively, the first who needs to succeed in performing such an integration inside his/her mind is the psychotherapist, who then, more specifically, must learn the art of conflict. Indeed, only if the psychotherapist has learned to exert this art can the participants of the group manage the unavoidable conflict of life and drive it towards a positive evolution. This means that conflict is not to be seen as something to be suppressed, but should be accepted as something which is part and parcel of the living process, intrinsic to the evolution that should eventually lead to the future. Clinical cases show that if conflict is used responsibly, it avoids clashes - which, vice versa, feature rigidity and the co-action of a primitive thought ruled by the aut-aut - and highlights the value of the et-et of peace and polemos, the generator of creativity.
Keywords: Group, therapist, clash, conflict, rage, laughter