On the equality between bishops. Again, no sources, sorry. I was going to add sources to my text file next week so this comes at a bad time.
St. Cyprian of Carthage:
>. . . the remaining apostles were necessarily also that which Peter was, endowed with an equal partnership both of honor and of power . . .
>. . . there is but one church founded by Christ but it is divided into many members throughout the world; likewise, there is but one episcopate but it is spread among the harmonious host of all the numerous bishops.
St. Ambrose of Milan:
>[The primacy of Peter is a] primacy of confession, not of honor; the primacy of belief, not of rank.
St. Jerome:
>. . . he gave [this name] to his apostles that they too should be called rocks.
>The Church is founded upon Peter, although elsewhere the same is attributed to all the Apostles, and they all receive the keys of the kingdom of heaven, and the strength of the Church depends upon them all alike, yet one of the Twelve is chosen so that when a head has been appointed there may be no occasion for schism.
St. Augustine:
>It's clear, you see, from many places in scripture that Peter can stand for, or represent, the Church; above all from that place where it says, To you will I hand over the keys of the kingdom of heaven . . . Did Peter receive these keys, and Paul not receive them? Did Peter receive them, and John and James and the other apostles not receive them? Or are the keys not to be found in the Church, where sins are being fogiven every day? But because Peter symbolically stood for the Church, what was given to him alone was given to the whole Church. So Peter represented the Church; the Church is the body of Christ.
>If it was said to Peter alone, Peter alon did this; he passed away, and went away, so who binds, who looses? I make bold to say, we too have these keys. And what am I to say? That it is only we who bind, only we who loose? No, you also bind, you also loose. Anybody who's bound, you see, is barred from your society; and when he's barred from your society, he's bound by you; and when he's reconciled he's loosed by you, because you too plead with God for him.
>After all, it isn't just one man that received these keys, but the Church in its unity. So this is the reason for Peter's acknowledged preeminence, that he stood for the Church's universality and unity, when he was told, "To you I am entrusting," what has in fact been entrusted to all.
>It is not without reason that, among the apostles, it is Peter who represents the Catholic Church. For the keys of the kingdom of heaven were given to this church when they were given to Peter. And when it was said to him, it was said to all: "Lovest thou me? Feed my sheep."
St. Pope Leo the Great:
>Each apostle encountered the same danger through temptation from fear [and] all eqally needed the help of divine protection . . . [yet] the Lord took special care of Peter and prayed especially for Peter. It was as if the condition of the others would be more secure if the mind of their leader were not overcome. In Peter, therefore, the fortitude of all is reinforced, for the aid of divine grace is ordered in such a way that the firmness given to Peter through Christ is conferred upon the apostles through Peter.
>Certainly the right to use this power was conveyed to the other apostles as well . . . Yet not without purpose is it handed over to one, though made known to all. It is entrusted in an unique way to Peter because the figure of Peter is set before all the rulers of the Church . . . for the aid of divine grace is ordered in such a way that the firmness given to Peter through Christ is conferred upon the apostles though Peter.
>[Jesus] wanted his gifts to flow into the entire body from Peter himself, as it were from the head.
>. . . although dignity is common to them, they did not all have the same rank. For even among the most blessed apostles there was a distinction in power. Although they wre all equal in being chosen, one was allowed to stand out among the others. . . . from this arrangement there arose, also, distinctions among bishops . . . [with] the care of the universal church converg[ing] in the one see of Peter, and nothign was to be at odds with his leadership.