Well doth He say to Peter, Lovest thou Me (ἀγαπᾶς diligis), and Peter answer, Amo Te (φελῶ amo), and our Lord replies again, Feed My lambs. Whereby, it appears that amor and dilectio are the same thing: especially as our Lord the third time He speaks does not say, Diligis Me, but Amas Me. He saith unto him the third time, Simon, son of Jonas, lovest thou Me? A third time our Lord asks Peter whether he loves Him. Three confessions are made to answer to the three denials; that the tongue might shew as much love as it had fear, and life gained draw out the voice as much as death threatened.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Tract. cxxii