Originally Posted by
Heteronym
An epistolary poem is not an epistolary novel, and Ovid didn't give the final contribution to the possibilities of the epistolary novel. Your post is beholden to the grander of the classics. Yours is the typical view that because someone did something many centuries ago, someone else centuries later can't improve upon it.
As for Don Quixote's depth, that wasn't Kundera writing, that was me, and I certainly didn't write that Don Quixote lacked depth. What I wrote was that Cervantes only described things externally. Don Quixote is only seen from the outside, through his action and dialogue. The epistolary novel, by the use of the first person narrator, allows for a character to talk about himself, to reveal nuances that merely physical description can't reveal. Cervantes didn't explore all the possibilities of the novel; if he had, there'd be no room for innovation.
I would also disagree that Kundera isn't a considerable critic. He's certainly better read than either of us; thinking about the history of the novel is his reason for being, he's not a mere reader but someone for whom these questions are his life.