Literary Warrior Mark Helprin's fictional marvels and political heterodoxies by Craig Lambert The study where Mark Helprin writes his novels and short stories, essays, speeches, letters, and Wall Street Journal columns is a spectacular room. Fifty feet long and nearly 30 feet wide, it holds two desks; there's a fireplace at one end, and some fishing rods hang aloft on display. Everything is in immaculate order.The ceiling stretches upward almost two stories; one towering wall is a mammoth bookcase that dominates the space with 19 vertical stacks, each one 15 shelves high and all of it patrolled by a rolling...