It seems to me that the current political task in a society like ours is to criticize the working of institutions that are apparently the most neutra… - Michel Foucault

This, then, is how one must imagine the punitive city. At the crossroads, in the gardens, at the side of roads being repaired or bridges built, in workshops open to all, in the depths of mines that may be visited, will be hundreds of tiny theatres of punishment. Each crime will have its law; each criminal his punishment. It will be a visible punishment, a punishment that tells all, that explains, justifies itself, convicts: placards, different-coloured caps bearing inscriptions, posters, symbols, texts read or printed, tirelessly repeat the code. Scenery, perspectives, optical effects, trompe-l'œil sometimes magnify the scene, making it more fearful than it is, but also clearer. From where the public is sitting, it is possible to believe in the existence of certain cruelties which, in fact, do not take place. But the essential point, in all these real or magnified severities, is that they should all, according to a strict economy, teach a lesson: that each punishment should be a fable. And that, in counterpoint with all the direct examples of virtue, one may at each moment encounter, as a living spectacle, the misfortunes of vice. Around each of these moral ‘representations’, schoolchildren will gather with their masters and adults will learn what lessons to teach their offspring. The great terrifying ritual of the public execution gives way, day after day, street after street, to this serious theatre, with its multifarious and persuasive scenes. And popular memory will reproduce in rumour the austere discourse of the law. But perhaps it will be necessary, above these innumerable spectacles and narratives, to place the major sign of punishment for the most terrible of crimes: the keystone of the penal edifice.

There is little in common between the organised parading of madness in the eighteenth century and the freedom with which madness came to the fore during the Renaissance. The earlier age had found it everywhere, an integral element of each experience, both in images and in real life dangers. During the classical period, it was also on public view, but behind bars. When it manifested itself it was at a carefully controlled distance, under the watchful eye of a reason that denied all kinship with it, and felt quite unthreatened by any hint of resemblance. Madness had become a thing to be observed, no longer the monster within, but an animal moved by strange mechanisms, more beast than man, where all humanity had long since disappeared.

To say that madness is dazzlement is to say that the madman sees the day, the same day that rational men see, as both live in the same light, but that when looking at that very light, nothing else and nothing in it, he sees it as nothing but emptiness, night and nothingness. Darkness for him is another way of seeing the day. Which means that in looking at the night and the nothingness of the night, he does not see at all. And that in the belief that he sees, he allows the fantasies of his imagination and the people of his nights to come to him as realities. For that reason, delirium and dazzlement exist in a relation that is the essence of madness, just as truth and clarity, in their fundamental relation, are constitutive of classical reason.
In that sense, the Cartesian progression of doubt is clearly the great exorcism of madness. Descartes closes his eyes and ears the better to see the true light of the essential day, thereby ensuring that he will not suffer the dazzlement of the mad, who open their eyes and only see night, and not seeing at all, believe that they see things when they imagine them. In the uniform clarity of his closed senses, Descartes has broken with all possible fascination, and if he sees, he knows he really sees what he is seeing. Whereas in the madman's gaze, drunk on the light that is night, images rise up and multiply, beyond any possible self-criticism, since the madman sees them, but irremediably separated from being, since the madman sees nothing.
Unreason is to reason as dazzlement is to daylight.