Classic Arguments About God's Existence in Cicero

My Introduction to Philosophy class is currently one-third of the way into Cicero's dialogue The Nature of the Gods -- a work that, like many others of Cicero, I unhesitatingly endorse as a philosophical analogue to undervalued stock.  It's a text that rarely gets taught in Ancient Philosophy classes, let alone Philosophy of Religion (where I taught it years back), or as a text by which to induct freshmen non-majors into the canons and practices of the philosophical profession.  I s...