Феодор Студит
There are also three levels of monks: The Rassophore, the Stavrophore, and the Schema-Monk (or Schema-Nun). Each of the three degrees represents an increased level of asceticism. In the early days of monasticism, there was only one level—the Great Schema—and even Saint Theodore the Studite argued against the establishment of intermediate grades, but nonetheless the consensus of the church has favored the development of three distinct levels.