Yves Grafmeyer is a prominent figure of French urban sociology. In the late 1970s he played an important role in promoting this discipline in France. He played an important role in promoting this discipline in France. In the late 1990s, together with Isaac Joseph, several major texts from the Chicago School, which was the author of a handbook of urban sociology which was still a reference, was also a reference, but also a researcher, who had produced a great deal of work and written prominently on segregation processes, stocking patterns, ways of living and urban societies. As a sociologist of urban life rather than the city, he is also a larger sociologist who has actively contributed to the structuring and animation of social science research, in Lyon and at national level, and has trained several generations of students. This book presents, in the form of interviews, his professional itinerary, the genesis, the objects, the issues at stake and the results of his research, as well as the major sociological concepts he has used. It then makes it possible to discover or rediscover a selection of texts that are particularly significant in his production, and ends with the testimonies of some of his colleagues.