 Plutarch was a prolific writer. The so-called Lamprias catalogue, an ancient library catalogue (preserved mutilated), supposedly compiled by Plutarch's son Lamprias, lists 227 works, several of them no longer extant (Russell 1973, 18–19). Plutarch's works divide into philosophical and historical-biographical. The latter, the so-called Lives (Bioi) of distinguished Greek and Roman men examined in pairs, demonstrate Plutarch's historical and rhetorical abilities, also showing his interest in character formation and politics (Russell 1973, 100–116). Plutarch's philosophical works, many of them dialogues (set in Delphi or Chaeronea), cover half of his literary output. In modern times they have been published under the collective term Moralia, a term first given to a collection of eleven ethical works preserved in a 14th century manuscript (Parisinus Graecus 1672). When the collection was augmented by many other writings preserved in other manuscripts on topics ranging from metaphysics, psychology, natural philosophy, theology, logic, to philosophy of art, the name was retained with the misleading implication that Plutarch's philosophical works are essentially or primarily ethical.