Sextus Empiricus: Against Those in the Disciplines (Pros Mathematikous, also known by the abbreviated title M 1-6) deals with six specialized fields of study: grammar, rhetoric, geometry, arithmetic, astrology, and music. In sceptical fashion, it questions the credentials of those who claim to have expert knowledge in these fields. It is the least well known of Sextus Empiricus' works, mainly because its subject-matter is not directly philosophical;...