The way people really think is not adequately analyzed by the universal categories of logic. Between social history and formal analyses of thought there is a path, a lane - maybe very narrow - which is the path of the historian of thought.
Michel FoucaultPsychoanalysis can unravel some of the forms of madness; it remains a stranger to the sovereign enterprise of unreason. It can neither limit nor transcribe, nor most certainly explain, what is essential in this enterprise.
Michel FoucaultDuring the years 1945-1965 (I am referring to Europe), there was a certain way of thinking correctly, a certain style of politicaldiscourse, a certain ethics of the intellectual. One had to be on familiar terms with Marx, not let one's dreams stray too far from Freud.... These were therequirements that made the strange occupation of writing and speaking a measure of truth about oneself and one's time acceptable.
Michel Foucault[L]et us say that we are obliged to produce the truth by the power that demands truth and needs it in order to function: we are forced to tell the truth, we are constrained, we are condemned to admit the truth or to discover it.
Michel Foucault