Peter Helias ( or ; – after 1166) was a medieval priest and philosopher. Born in Poitiers, he became a pupil of Thierry of Chartres at Paris in the 1130s, also teaching grammar and rhetoric in his school. Around 1155 he returned to Poitiers where he later died.

Through Thierry, he is meant to have been influenced particularly by Boethius; other influences include William of Conches. He contributed to the theory of substance and influenced Roger Bacon's Overview of Grammar.

Peter Helias

In linguistics, he is regarded as having contributed ideas key to the development of grammatical categories such as parts of speech.

Peter Helias

Works

A commentary on Cicero's De inventione

c. 1150: Summa super Priscianum, an updated textbook on Priscian's Institutiones grammaticae, edited by Leo A. Reilly, Toronto 1993

Peter Helias

References

12th-century French people

12th-century French philosophers

1100s births

1160s deaths

12th-century linguists

Scholastic philosophers

12th-century French writers

12th-century writers in Latin