Throw the ignoratio elenchi in his teeth, and, at once, you have him annihilated.
"The Works of Edgar Allan Poe Volume 4 (of 5) of the Raven Edition" by Edgar Allan Poe
He would not be so humorous about Zeus, nor fall into an ignoratio elenchi.
"Myth, Ritual, and Religion, Vol. 1" by Andrew Lang
As regards the usefulness of the Syllogism, this is an IGNORATIO ELENCHI.
"Logic, Inductive and Deductive" by William Minto
IGNORATIO ELENCHI (L.), ignoring the point in question, the fallacy of arguing to the wrong point.
"Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements)" by Various