To Hear Thought Being Spoken, to Learn to Convey a Thought Process in the Academic Context: The Testimony of "Professors" Michel Certeau, Gilles Deleuze, Michel Foucault and Roland Barthes [Ouvir Falar O Pensamento, Aprender a Falar O Pensamento No Interior da Universidade: O Testemunho dos "Professores" Michel Certeau, Gilles Deleuze, Michel Foucault e Roland Barthes]