Reply #4: First, calm him down

[Centrisms Voice]

When he's in a calm mood, make him promise to answer you questions only with logic for the next x minutes. (Don't make X too big a number at first.)

Then, start with "If the rich get a tax cut, what's to stop them from socking it away in a Cayman Island bank instead of using it to hire middle class workers?"

I have lots of others, if you need them.