I belong to three “book discussion groups.” That’s two too many, but who could say “no”? For the first one, I waited a long time to be invited to join. I actually think I had to wait for a member to die, but no one ever actually said this to me. The second one is a neighborhood group. We usually walk to each other’s houses and actually often discuss the assigned book before moving on to community concerns, films, and general kindly gossip. This week, we are walking to the library where Brian Doyle, the author of “our” monthly selection, Mink River, will hold forth. Finally, I am one of two members of a very exclusive group with an old high-school friend in Corpus, Christi, Texas — and I do know that it is redundant to say “old high-school friend.” He and I are reading The Island of Vice but we had to take a hiatus until April15 because he is a CPA. Playing catch-up now.