Thierry of Chartres

Thierry of Chartres (died before 1155, probably 1150) was a twelfth-century French philosopher working at Chartres and Paris. He was a major figure in twelfth-century philosophy and learning, known for his embrace of Plato's *Timaeus* and his application of philosophy to theological issues. The cathedral school at Chartres promoted scholarship before the first university was founded in France, and Thierry was a key figure there. Some scholars previously believed he was a brother of Bernard of Chartres, the founder of the school, but this is now considered unlikely. Thierry became chancellor of Chartres after Gilbert of Poitiers. His students included John of Salisbury, Herman of Carinthia, and Clarembald of Arras.