In higher education in Brazil, Adeodato made significant contributions to the consolidation of postgraduate studies in Law, serving as a researcher at various universities and as a consultant for official and private institutions.
In the philosophical realm, Adeodato conducted the first critical analysis of Hannah Arendt's work in Brazil during the 1980s and became a pioneer in the development of Rhetorical Theory of Law.
His early postdoctoral work was at the University of Mainz (1988–1989), where he engaged with rhetorical philosophers aligned with Theodor Viehweg's thought.
He revisits discussions from the sophists, Aristotle, and later thinkers such as the Hellenistic skeptic philosopher Sextus Empiricus, whose works are often titled "Against" (adversus).
Empirical data are not objective, but this does not imply that reality is subjective, at least not in the sense of being dependent on each individual; rather, they are intersubjective, which leads to the concept of public control over language.
[4] This view of rhetoric is also inspired by Friedrich Nietzsche, Theodor Viehweg, Ottmar Ballweg, and Katharina von Schlieffen (Sobota).
In 2016, during the controversy surrounding the impeachment process against President Dilma Rousseff, Adeodato expressed his views in an interview with the Diário de Pernambuco newspaper.
Although he opposed the impeachment on the grounds that its consequences would not be favorable for the country (pragmatism), he argued that the procedure was carried out by the competent authorities and followed due process.