Every decade or so I reread Tolstoy’s War and Peace. I have just embarked again on this pleasure. I don’t put the rereading on my calendar. Instead the need arises; I can’t say exactly why, but I find myself wanting to reread this great novel, often because of wrestlings in my own work or because of the need for an ordering of the universe of politics, history, art and spiritual quest. The return is always a homecoming, a touchstone.

Authors are often asked, what is your favorite book? Mine, modestly, is War and Peace. I admire Tolstoy’s ability to weave large historical and political themes with compelling personal dramas. I admire the surprises of...