Nicene and Post-Nicene Fathers, Vol. IV:
Writings in Connection with the Donatist Controversy.: Chapter 66

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.  Augustin answered:  What shall I say unto thee, O man, except that thou art 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.