Founder and abbot of Sakkoudion
Plato established the monastery of Sakkoudion near Bithynian Mount Olympus around 782-783 and governed it as its first abbot. Under his guidance the community grew, and its church was dedicated to Saint John the Theologian.
He was known for a strict ascetic life. Later accounts describe practices of severe self-denial, including the wearing of an iron chain and a diet of minimal food, in keeping with the rigorous monastic ideal he pursued and taught.