During the second part of his stay in Frankfort, Bruno received an invitation from a young patrician of Venice, Giovanni Mocenigo, to come to him there and instruct him in the arts for which Bruno was famed. To the surprise of all who knew the circumstances, Bruno accepted, and re-entered, in August, the Italy which he had left some fourteen years earlier as a refugee. It was through the bookseller Ciotto that the negotiations were carried on. Mocenigo appeared in his shop one day to buy a work of Bruno which Ciotto in his deposition called at first the _Heroici Furori_, but this name was cancelled, and _De Minimo magno et mensura_ written in its stead; in all probability it was neither the _Furori_ nor any of the Latin poems to which the second (erroneous) title might refer, but one of the Lullian works. Mocenigo asked at the same time whether Ciotto knew Bruno, and where he was; and on the reply that he was probably at Frankfort (they had found lodging in the same monastery there), Mocenigo expressed a wish that Bruno would come to Venice to teach him the secrets of Memory, and the others he professed, as shown by the book that had just changed hands. Ciotto believed Bruno would come if asked; and accordingly, after a few days, Mocenigo brought a letter for Bruno, which Ciotto undertook to deliver, and in which he was besought to come to Venice. The message must have been delivered in the autumn of 1591, and Bruno seems to have replied by immediate acceptance.[103] A previous letter, however, had been written, probably before Mocenigo spoke with Ciotto, and sent by another hand; it may have been the receipt of it which brought Bruno from Zürich to Frankfort, to hasten the printing of his Latin works. In both letters there were evidently specious promises of protection.[104] [Sidenote: Bruno's reasons for returning.] [Sidenote: March 3, 1592.]