3 But why do I not make answer to myself, that these fair and clever similies, and charges of this nature may be poured forth against all who are teachers of any thing by any adversary, with abundance of wit and sarcasm? But I thought that I ought to insert something of this kind in my letter, in order to admonish them to give over such proceedings; so that, as he says, apart from trifles of common-places, matter may contend with matter, cause with cause, reason with reason.
Wherefore let them give over that saying, which they have in their mouths as though of necessity, when any one, who has been for some long time a hearer, has left them; “The Light has made a passage through him.” For you see, you who are my chief care, (for I am not over anxious about them,) how empty this is, and most easy for any one to find fault with. Therefore I leave this for your own wisdom to consider. For I have no fear that you will think me possessed by indwelling Light, when I was entangled in the life of this world, having a darkened hope, of beauty of wife, of pomp of riches, of emptiness of honors, and of all other hurtful and deadly pleasures.
For all these, as is not unknown to you, I ceased not to desire and hope for, at the time when I was their attentive hearer. And I do not lay this to the charge of their teaching; for I also confess that they also carefully advise to shun these. But now to say that I am deserted by light, when I have turned myself from all these shadows of things, and have determined to be content with that diet merely which is necessary for health of body; but that I was enlightened and shining, at a time when I loved these things, and was wrapped up in them, is the part of a man, to use the mildest expression, wanting in a keen insight into matters, on which he loves to speak at length. But, if you please, let us come to the cause in hand.
Source: On the Profit of Believing (New Advent)