Menn joined University of Toronto in 2025, before that he taught from 1989 to 1992 at
Princeton University and at
McGill University from 1992 to 2025. Between 2011 and 2015 he was Professor of Ancient and Contemporary Philosophy at
Humboldt University of Berlin, where he maintains the status of honorary professor. His specialties include
ancient philosophy (
Plato,
Aristotle,
Stoicism and
neo-Platonism),
medieval philosophy (
Western and
Islamic). He is also a mathematician, holding a doctorate in Mathematics from Johns Hopkins University in 1985 and one in Philosophy from University of Chicago in 1989. ==Books==