Answer
Abbé Pierre did write a few books, including the best-seller "Hé béh, ma parole !" ("Well, my word!"), which was translated into English as "Out of the Ashes". The book describes Pierre's experiences during the Second World War and his work with homeless people after the war. He also wrote a memoir, "Je t'écris de ma nuit" ("I'm Writing to You from My Night"), which was published in 1987.