Making use of you as my pretext

“WHAT,” SAY YOU, “are you giving me advice? Indeed, have you already advised yourself, already corrected your own faults? Is this the reason why you have leisure to reform other men?” No, I am not so shameless as to undertake to cure my fellow-men when I am ill myself. I am, however, discussing with you troubles which concern us both, and sharing the remedy with you, just as if we were lying ill in the same hospital. Listen to me, therefore, as you would if I were talking to myself. I am admitting you to my inmost thoughts, and am having it out with myself, merely making use of you as my pretext.

Seneca, Epistulae Morales ad Lucilium, XXVII. ON THE GOOD WHICH ABIDES