A scribe cannot write without ink. Miniatures of St. John recording the Book of Revelation sometimes illustrate the legend that Devil tried to steel the Evangelist’s portable inkpot and pen case to prevent him writing this last book of the Bible. Rouen Book of Hours. C. 1480
After Christopher De Hamel, Medieval Craftsmen. Scribes and Illuminators (London: British Museum Press, 1992), pic. 24, p. 31.