TO THE MOST ILLUSTRIOUS AND HIGHEST PRINCE HENRY

OF ANGOULÊME, GRAND PRIOR OF FRANCE,

Governor of Provence, and Lieutenant General, and Admiral of the entire eastern sea for the Royal Majesty: Jean Regnault, Counselor and Secretary to the same Most Illustrious Prince.

A large, ornate initial letter 'C' is decorated with intricate foliage and a central tree motif, a common flourish in 16th-century printing. SINCE there has come into my hands, most exalted Prince, a twofold dialogue concerning the Incantation of Circe original: "cantu Circaeo". This refers to the mythological sorceress Circe, used here as a metaphor for the transformative power of the mind and memory. and its application to the Art of Memory. And since the excellence and usefulness original: "fructus," literally 'fruit' or 'profit' of this art are not hidden from me, I deemed it most worthy to be shared with noble and high-minded spirits. For it contains subject matter that is not at all trivial, but concerns things most highly desired. I pass over the fact that, besides the title and the basic elements of the art, it has nothing in common with others published until now; it introduces its own unique features, which testify that Giordano Giordano Bruno (1548–1600), the Italian philosopher and cosmologist famous for his system of mnemonics (memory techniques). is not only its author but its fruitful inventor.

a ii Signature mark 'a ij', used by printers to track the order of the sheets for binding.