HEADLINE: CRITIC'S NOTEBOOK; How Books Have Shaped U.S. Policy BYLINE: By MICHIKO KAKUTANI BODY: President Bush has never been known as a bookworm. An instinctive politician who goes with his gut, he has usually left the heavy reading in the family to his wife, Laura, a former librarian. He is "often uncurious and as a result ill informed," his former speechwriter, David Frum, wrote in a memoir this year, adding that "conspicuous intelligence seemed actively unwelcome in the Bush White House." It is curious then that books by historians, philosophers and policy analysts have played a significant role in shaping...