Claude-Edmonde Magny wrote a letter to Jorge Sempr n in 1943 that would stay with him his entire life, even when he entered Spain under a false name; it was a guide for how to live and how to be a writer. The text of the letter, reproduced here, contains singular and unforgettable ideas about the power of writing. El m tico libro que acompa a Jorge Sempr n toda su vida, incluso cuando acud a a Espa a con nombre falso. La larga carta que...