Today, despite these criticisms, "Walden" stands as one of America's most celebrated works of literature. John Updike wrote of "Walden", "A century and a half after its publication, "Walden" has become such a totem of the back-to-nature, preservationist, anti-business, civil-disobedience mindset, and Thoreau so vivid a protester, so perfect a crank and hermit saint, that the book risks being as revered and unread as the Bible." The American psychologist B. F. Skinner wrote that he carried a copy of "Walden" with him in his youth, and eventually wrote "Walden Two" in 1945, a fictional utopia about 1,000 members who live together in a Thoreau-inspired community.