Anselm on Divine Power and Greatness

Recently, the web-comic xkcd put out a one-panel one-liner that caught my immediate attention as a sometime scholar working on Anselm of Canterbury.  He's often credited with originating the "ontological argument," in some important senses a misattribution, since that term comes into use much later, in the 18th century, and since Anselm's "unum argumentum" is actually nearly the whole of the Proslogion , not just the second chapter -- there's even more to be said, but those are topics for...