"Linus and Cletus were Bishops of the city of Rome before Clement. How then, some men ask, can Clement in his letter to James say that Peter passed over to him his position as a church-teacher. The explanation of this point, as I understand, is as follows. Linus and Cletus were, no doubt, Bishops in the city of Rome before Clement, but this was in Peter’s life-time; that is, they took charge of the episcopal work, while he discharged the duties of the apostolate. He is known to have done the same thing at Cæsarea; for there, he had at his side Zacchæus whom he had ordained as Bishop."