The Institutes and the Conferences brought Egyptian monastic practice to Gaul: the eight thoughts, prayer, and the sayings of the desert fathers. The western rule of life learned its shape partly from him.

John Cassian
Monk of Marseille
John Cassian (c. 360–c. 435) trained among the monks of Egypt and settled at Marseille.
- Dates
- c. 360–c. 435
- Role
- Monk of Marseille
- See
- Gaul