As part of the series we're going to present on the Epicurean sections of Cicero's "On The Nature of the Gods," we will want to be sure to at least mention the major arguments that might be of interest to modern readers, even if they are not explicitly mentioned by Velleius.
The first step in giving an overview of the responses will be to produce a list of the major arguments. Let's use this thread to do that -- we can update this first thread with suggestions that are given in subsequent posts.
1. St. Anselm's Ontological Argument