An essential collection of primary documents, updated to include Pope Francis's encyclical Laudato Si'.This classic compendium offers access to more than one hundred years of official statements of the Catholic Church on social issues. With documents ranging from Pope Leo XIII's Rerum Novarum (1891) to Pope Francis's Laudato Si' (2015), this is the single most comprehensive collection available of the primary documents of Catholic social thought.Each document is preceded by an introductory essay and helpful notes, making it an exceptional teaching aid as well as reference tool.