Sigrid Undset's Catherine of Siena is critically acclaimed as one of the best biographies of this well known, and amazing fourteenth-century saint. Known for her historical fiction, which won her the Nobel Prize for literature in 1928, Undset based this factual work on primary sources, her own experiences living in Italy, and her profound understanding of the human heart. One of the greatest novelists of the twentieth century, Undset was no stranger...