Chapter 66.
147 Petilianus said: "‘Blessed are they which do hunger and thirst after righteousness: for they shall be filled.' To you it seems to be righteousness that you thirst after our blood."
148. Augustine answered: What shall I say unto you, O man, except that you are calumnious? The unity of Christ, indeed, is hungering and thirsting after all of you; and I would that it might swallow you up, for then would you be no longer heretics.
Source: Answer to Letters of Petilian, Bishop of Cirta (New Advent)