5 Chrysostom: I do indeed remember often hearing such things said by you; I would not deny it. But if I ever taunted you, I did it in sport and not in serious truth. However, I do not now dispute about these matters, and I claim the same degree of forbearance from you while I wish to make mention of some of the good qualities which you possess. For if you attempt to convict me of saying what is untrue, I shall not spare you, but shall prove that you say these things rather by way of self-depreciation than with a view to truth, and I will employ no evidence but your own words and deeds to demonstrate the truth of my assertion. And now the first question I wish to ask of you is this: do you know how great the power of love is? For omitting all the miracles which were to be wrought by the apostles, Christ said, “Hereby shall men know that you are my disciples if you love one another,” and Paul said that it was the fulfilling of the law, and that in default of it no spiritual gift had any profit. Well, this choice good, the distinguishing mark of Christ's disciples, the gift which is higher than all other gifts, I perceived to be deeply implanted in your soul, and teeming with much fruit.
Basil: I acknowledge indeed that the matter is one of deep concern to me, and that I endeavor most earnestly to keep this commandment, but that I have not even half succeeded in so doing, even you yourself would bear me witness if you would leave off talking out of partiality, and simply respect the truth.
Source: On the Priesthood (New Advent)