Former Harper’s editor Lewis Lapham is Mayor Bloomberg’s worst nightmare: The venerable scribe started smoking when he was 17 and says he still puffs on two packs a day at 78. Lapham opened up about the dirty habit he describes as “a pleasure” for the PEN World Voices Festival of International Literature at The Standard East Village last week. Lapham adds in a new interview with Web site Standard Culture, “I’m certainly by now addicted to it, but I regard it as a pleasure.” He adds his doctor’s not too concerned, either. “It is, according to my physician, not apt to kill me,” Lapham says. “He says to me, ‘Lewis, you’re gonna die, we all die, but you never die of the thing you think you’re gonna die of.’ It’s the luck of the DNA . . . I was totally fine as of my latest checkup.” Continuing its cultural streak, The Standard’s High Line Room and Andre Balazs are tonight hosting a talk between Google’s Eric Schmidt and Jared Cohen, authors of “The New Digital Age.”