Alexis de Tocqueville, voyaged to the United States in 1831 to study its prisons and resumed with a affluence of wider observations that he organized in “Democracy in America” (1835), which is known to be one of the most significant books of the 19th century. With its incisive annotations on parity and egoism, Tocqueville’s work vestiges a cherished explanation of America to Europeans and of Americans to themselves.