The question, of course, is how the individual got to be in this ‘social rôle’, and how the particular social organization (with its property-rights and structure of authority) got to be there. And these are historical questions. If we stop history at a given point, then there are no classes but simply a multitude of individuals with a multitude of experiences. But if we watch these men over an adequate period of social change, we observe patterns in their relationships, their ideas, and their institutions. Class is defined by men as they live their own history, and, in the end, this is its only definition.