could amuse, and images that would serve as decorations or as aids to devotion, had attractions for all people, and especially for the poor and illiterate. Whoever printed merchandise of this nature could rightfully expect that it would be sold in such large quantities that the cost of engraving would be inappreciable.
The world was not ready at the beginning of the fifteenth century to apply its knowledge of printing with ink to the making of books. It was regarded as too expensive a process. It bided its time, waiting for more readers and book-buyers, for paper in greater supply and of better quality, for higher skill on the part of the engravers, printers and ink-makers. If there were no other evidences than those afforded by the partly printed and written books, it could be safely assumed that when the early engravers did begin to print books, they would be, not books of letters, but books of pictures.
