Augustine on Peter

My thanks to Cathmom5 who has been presenting snippets from St. Augustine, here are some I've collected on St. Peter...

“Number the bishops from the see of Peter itself. And in that order of Fathers see who succeeded whom, That is the rock against which the gates of hell do not prevail.”
Psalmus contra partem Donati, 18 (A.D. 393),GCC 51 

“Let us not listen to those who deny that the Church of God is able to forgive all sins. They are wretched indeed, because they do not recognize in Peter the rock and they refuse to believe that the keys of heaven, lost from their own hands, have been given to the Church.”
Christian Combat, 31:33(A.D. 397), in JUR,3:51 

“For if the lineal succession of bishops is to be taken into account, with how much more certainty and benefit to the Church do we reckon back till we reach Peter himself, to whom, as bearing in a figure the whole Church, the Lord said: ‘Upon this rock will I build my Church, and the gates of hell shall not prevail against it !’ The successor of Peter was Linus, and his successors in unbroken continuity were these: -- Clement, Anacletus, Evaristus, Alexander, Sixtus, Telesphorus, Iginus, Anicetus, Pius, Soter, Eleutherius, Victor, Zephirinus, Calixtus, Urbanus, Pontianus, Antherus, Fabianus, Cornelius, Lucius, Stephanus, Xystus, Dionysius, Felix, Eutychianus, Gaius, Marcellinus, Marcellus, Eusebius, Miltiades, Sylvester, Marcus, Julius, Liberius, Damasus, and Siricius, whose successor is the present Bishop Anastasius. In this order of succession no Donatist bishop is found. But, reversing the natural course of things, the Donatists sent to Rome from Africa an ordained bishop, who, putting himself at the head of a few Africans in the great metropolis, gave some notoriety to the name of ‘mountain men,’ or Cutzupits, by which they were known.”
To Generosus, Epistle 53:2(A.D. 400), in NPNF1,I:298 

“When, therefore, He had said to His disciples, ‘Will ye also go away?” Peter, that Rock, answered with the voice of all, “Lord, to whom shall we go? Thou hast the words of eternal life.’ “
Homilies on John, Tract 11:5(A.D. 417), in NPNF1,VII:76 

“And the Lord, to him to whom a little before He had said, ‘Blessed thou art, and upon this Rock I will build my Church,’ saith, ‘Go back behind, Satan, an offence thou art to Me.’ Why therefore ‘Satan’ is he, that a little before was ‘blessed,’ and a ‘Rock’ ?”
In Psalms, 56[55]:14[PL 36, 656] (A.D. 418),in NPNF1,VIII:223 

“Peter, who had confessed Him as the Son of God, and in that confession had been called the rock upon which the Church should be built.”
In Psalms, 69:4[PL 36, 869] (A.D. 418), in Butler, 251 

“And if a Jew asks us why we do that, we sound from the rock, we say, This Peter did, this Paul did: from the midst of the rocks we give our voice. But that rock, Peter himself, that great mountain, when he prayed and saw that vision, was watered from above.”
In Psalms, 104[103]:16(A.D. 418),in NPNF1,VIII:513