18 But, my Fisherman, the objection will be raised that you are reckless and extravagant in your language; that All things were made through Him needs qualification. There is the Unbegotten, made of none; there is also the Son, begotten of the Unborn Father. This All things is an unguarded statement, admitting no exceptions. While we are silent, not daring to answer or trying to think of some reply, do you break in with, And without Him was nothing made. You have restored the Author of the Godhead to His place, while proclaiming that He has a Companion. From your saying that nothing was made without Him, I learn that He was not alone. He through Whom the work was done is One; He without Whom it was not done is Another: a distinction is drawn between Creator and Companion.
Source: On the Trinity (New Advent)