Michel Foucault’s advocacy toward penal reform in France differed from his theories. Although Foucault is associated with the prison abolition movement, he also proposed more humane prisons. The article reframes Foucauldian theory through a dialectic with the theories of Marc Ancel, a prominent figure in the emergence of liberal sentencing norms in France. Ancel and Foucault were contemporaries whose legacies are intertwined. Ancel defended more benevolent prisons where experts would rehabilitate offenders. This evokes exactly what Discipline and Punish cast as an insidious strategy of social control. In reality, Foucault and Ancel converged in intriguing ways. The dialectic offers another perspective on Foucault, whose theories have fostered skepticism about the possibility of progress. While mass incarceration’s rise in the United States may evoke a Foucauldian dystopia, the relative development of human rights and dignity in European punishment reflects aspirations that Foucault embraced as an activist concerned about fatalistic interpretations of his theories.