International audienceThis paper describes how the author's doctoral fieldwork in anthropology among youngsters of Québec city during the nineties became a genuine ethical experience. The life-story interviews that she made with them can be considered as ethical encounters. She then tried to write a dissertation which could satisfy both the scientific community and her own ethical demand not to erase from her text the ethical link which appeared between three of these youngsters and herself. Is it possible to build a scientific knowledge about other human beings without destructing, masking or negating the relationship created during fieldwork ?Cet article rend compte de l'expérience éthique suscitée par un terrain de doctorat en anthropolo...