I disagree. I live in NY and I meet all social types. Dante, Shakespeare...the only people I can think of whose interest would be piqued by these writers are pretentious literature majors at NYU. You know the type...people who think they're very educated, deep thinkers...when they're really just a bunch of college kids trying to act the part. So if that's your target audience, I guess you might need Dante. Otherwise, for Christian philosophy, you could just as well talk about Augustine and Aquinas...but those guys are out of the purview of even most pretentious lit majors.