Cornelius: “There is one God and one Christ and but one episcopal chair, originally founded on Peter, by the Lord’s authority. There cannot, therefore, be set up another altar or another priesthood. Whatever any man in his rage or rashness shall appoint, in defiance of the divine institution, must be a spurious, profane and sacrilegious ordinance” (St. Cyprian, The Unity of the Catholic Church).
Cyprian: “You cannot have God for your Father if you do not have the Church for your mother…. God is one and Christ is one, and his Church is one; one is the faith, and one is the people cemented together by harmony into the strong unity of a body…. If we are the heirs of Christ, let us abide in the peace of Christ; if we are the sons of God, let us be lovers of peace” (St. Cyprian, The Unity of the Catholic Church).