In the Neoplatonic schools, introductions to logic, and the Categories in particular, would begin with a list of ten different questions relating to Aristotle's philosophy and his ideal interpreter and student. Olympiodorus' own introduction to logic (the Prolegomena) follows this pattern; he expands on the remarks of his own teacher Ammonius of Alexandria, and closely models his discussion on his predecessor's work. In the standard list of ten questions that must be discussed in an introductory philosophy course, the third relates to the subject with which the student is to start his or her philosophical education. Which of logic, ethics, natural science and mathematics is the proper starting-point for philosophy?

In November 2014 I had the pleasure of examining Bruxellensis 11377–80. This paper manuscript was owned by Pierre Pantin at his death in 1611; it occupies no. 30 in his catalogue, where the first text, on fols 1–4, was misidentified as ‘Hymni Homeri’. The next owner, André Schott, repeated the error; Omont (and following him the Pinakes database) uses a page-numeration that completely excludes the current fols 1–4.