Hidden Codes in Shakespeare’s First Folio

One of the most important volumes in the history of English literature is Shakespeare's First Folio (1623), which preserves thirty-six plays, many of which had never been printed before. The Folio's typographic and numerical elements, such as page numbering, the use of Roman and Arabic numbers, and purported hidden codes, have long drawn interest in addition to its literary merits. This article investigates the actual number-related practices of early modern printers and critically assesses assertions—often connected to Francis Bacon—that the Folio contains cryptography or secret numerical information. The essay demonstrates that most assertions of hidden codes stem from retroactive pattern-seeking rather than deliberate design by situating the Folio within the historical context of seventeenth-century printing and Renaissance numerology. The First Folio is therefore best understood not as a cryptic manuscript but as a complex, transitional, and historically invaluable artifact of early modern print culture.