An avid reader myself, I was excited by what my friend had discovered and he went so far as to suggest the first one I should read: Plato's Republic. A week or two later when I saw him again, he gave me an mp3 file of Plato's Republic to listen to while on the road. The creaky wheels started to turn again.
Now of course book lists can be subjective; I wouldn't expect the atheist Richard Dawkins to have the same reading list as say Stephen Barr (all God, science, physics lovers MUST read his book: Modern Physics And Ancient Faith by Stephen M. Barr).
One book shows up in both lists, my friend's and Father Coulter's: The Brothers Karamazov by Fyodor Dostoyevsky. I originally heard about this book when Father Benedict Groeschel aptly described it as the best fiction work of its kind describing the reality, existence, and abject horrors of evil. Nobody's going to suit up in spiritual battle armor unless they can clearly identify the foe of evil in this world. Without giving it away, there is a section in this book that is absolutely horrendous in its description of the capacity of evil in man and I've never seen or read anything like it before.
A revert to the Catholic church, I am totally free to pick whatever book I want to read, as are all Catholics and Christians that I know, but with the thousands upon thousands of choices available, spanning centuries of time, it's nice to see a common list emerge among those that I deem trustworthy.
Indeed the beat goes on but one day the beat stops, that is sooner or later, I am going to die a mortal death. Like my friend from Vietnam, within that span of time, I want to fill my mind with the best wisdom out there, to know and possess hope for the eternal life to come.