Through literature, philosophy and clinical practice, the authors discuss some issues at stake in the process of translation/understanding. They explore how, in the context of infidelity in love, the analyst can take up the “source” text of a patient while transforming it into the language of distress and dependence. They emphasize how much maintaining a vital otherness with the patient, in particular between the adolescent patient who is suffering narcissistically and his care team, makes it possible to overcome the incestual confusion that led him to translate with mistrust the messages addressed by adults. They thus return to the notion of the linguistic hospitality (according to P. Ricoeur’s fine expression) of the analyst who receives, even at the level of his body, the speech of the stranger (as J. McDougall suggests with her notion of somatizing silent body to body communication) which he can then translate and return to his patient.