" Like surveillance and with it, normalization becomes one of the greatest instruments of power at the end of the classical age. For the marks that once indicated status, privilege and affiliation were increasingly replaced – or at least supplemented – by a whole range of decrees of normality indicating membership of a homogenous social body but also playing a part in classification, hierarchization and the distribution of rank. In a sense, the power of normalization imposes homogeneity; but it individualizes by making it possible to measure gaps, to determine levels, to fix specialties and to render the differences useful by fitting them one to another. It is easy to understand how the power of the norm functions within a system of formal equality, since within a homogeneity that is the rule, the norm introduces, as a useful imperative and a result of measurement, all the shading of individual difference. "

― Michel Foucault , Discipline and Punish: The Birth of the Prison