new institutions to confine outcast people featured way-of-life regimes composed of punishment-and-reward programs meant to compel the inmates to choose to reverse their choices of lifestyle. The socio-economic forces that promoted this institutional confinement included the legalistic need for an extrajudicial social mechanism with the legal authority to physically separate socially undesirable people from mainstream society; and for controlling the wages and employment of poor people living in workhouses, whose availability lowered the wages of freeman workers. The conceptual distinction, between the mentally insane and the mentally sane, was a social construct produced by the practices of the extrajudicial separation of a human being from free society to institutional confinement. In turn, institutional confinement conveniently made insane people available to medical doctors then beginning to view madness as a natural object of study, and then as an illness to be cured. Modern era The Modern era began at the end of the 18th century, with the creation of medical institutions for confining mentally insane people under the supervision of medical doctors. Those institutions were product of two cultural motives: (i) the new goal of curing the insane away from poor families; and (ii) the old purpose of confining socially undesirable people to protect society. Those two, distinct social purposes soon were forgotten, and the medical institution became the only place for the administration of therapeutic treatments for madness. Although nominally more enlightened in scientific and diagnostic perspective, and compassionate in the clinical treatment of insane people, the modern medical institution remained as cruelly controlling as were mediaeval treatments for madness. In the preface to the 1961 edition of Madness and Civilization, Foucault said that: Reception In the critical volume, Foucault (1985), the philosopher José Guilherme Merquior said that the value of Madness and Civilization as intellectual history was diminished by errors of fact and of interpretation that undermine Foucault's thesis—how social forces determine the meanings of madness and society's responses to the mental disorder of the person. Specifically problematic was his selective citation of data, which ignored contradictory historical evidence of preventive imprisonment and physical cruelty towards insane people during the historical periods when Foucault said society perceived the mad as wise people—institutional behaviors allowed by the culture of Christian Europeans who considered madness worse than sin. Nonetheless, Merquior said that, like the book Life Against Death (1959), by Norman O. Brown, Foucault's book about Madness and Civilization is "a