Brief Review of Three Methodological Problems of Life Histories in Sociology: This article reviews the popularity of life histories in sociology in the early 1970s, especially in light of the work done at that time by Daniel Bertaux. Forty years later, what can be said of it? After a brief historical overview, we consider: 1. The issue of representativeness; 2. The status conferred on common sense; and 3. The rigor of the analysis developed on the basis of a life history in the framework of grounded theory. These three topics are discussed so as to show possible solutions to the methodological problems they raise. A simple example of the analysis of a life history illustrates this point.