Legend[edit]
According to one version of a legend that was already recorded in the Middle Ages, the scribe was a monk who broke his monastic vows and was sentenced to be walled up alive. In order to forbear this harsh penalty he promised to create in one year a book to glorify the monastery forever, including all human knowledge. Near midnight on the last night, he became sure that he could not complete this task alone, so he made a special prayer, not addressed to God but to the fallen angel Lucifer, asking him to help him finish the book in exchange for his soul. The devil completed the manuscript and the monk added the devil's picture out of gratitude for his aid.[1][16][17] In tests to recreate the work, it is estimated that reproducing only the calligraphy, without the illustrations or embellishments, would have taken 5 years of non-stop writing.[14]