 John overtly adopted the same Ciceronian New Academic perspective in all of his noteworthy contributions to philosophy: the Policraticus, the Metalogicon, and the Entheticus de dogmate philosophorum maior. The first is his best-known work, a treatise on proper courtly and royal conduct which contains a great measure of political theory; the second comprises his critical appraisal of the state of education in twelfth-century Europe, with special attention to the advances in knowledge occasioned by the Aristotelian learning of his time; the last is a lengthy didactic poem. While scholars have normally treated these writings as discrete and largely unrelated (Wilks 1984a and von Moos 1984 are exceptions), they are united methodologically by their shared endorsement and application of Ciceronian moderate skepticism, which proves to be crucial in framing the substance of John’s philosophical stance. Charles B. Schmitt’s claim that John’s “treatment [of the New Academy] has little philosophical sophistication” proves unsustainable (Schmitt 1972: 37–38).