Toward the end of 1792, Cssanova wrote a letter to Robespierre, which, as he advises M. Opiz, the 13th January 1793, occupied one hundred and twenty folio pages.  This letter was not to be found at Dux and it may possibly have been sent, or may have been destroyed by Casanova on the advice of Abbe O’Kelly.  Casanova’s feelings were very bitter over the trial of Louis XVI., and in his letters to M. Opiz he complained bitterly of the Jacobins and predicted the ruin of France.  Certainly, to Casanova, the French Revolution represented the complete overthrow of many of his cherished illusions.

On the 1st August 1793, Wilhelmina Rietz, Countess Lichtenau (called the Pompadour of Frederic-William ii., King of Prussia) wrote to the librarian at Dux: 

“Monsieur

“It seems impossible to know where Count Valstaine [Waldstein] is staying, whether he is in Europe, Africa, America, or possibly the Megamiques.  If he is there, you are the only one who could insure his receiving the enclosed letter.

“For my part, I have not yet had time to read their history, but the first reading I do will assuredly be that.

“Mademoiselle Chappuis has the honor of recalling herself to your memory, and I have that of being your very humble servant,

“Wilhelmina Rietz.”

The allusions to a “history” and to the ‘Megamiques’ in this letter refer to Casanova’s romance, ‘Icosameron’.

About this time, Count Waldstein returned to Dux after having been, at Paris, according to Da Ponte, concerned in planning the flight of Louis XVI., and in attempting to save the Princess Lamballe.  On the 17th August, Casanova replied to the above letter: 

“Madame,

“I handed the Count your letter two minutes after having received it, finding him easily.  I told him that he should respond at once, for the post was ready to go; but, as he begged to wait for the following ordinary, I did not insist.  The day before yesterday, he begged me to wait again, but he did not find me so complaisant.  I respond to you, Madame, for his carelessness in replying to letters is extreme; he is so shameful that he is in despair when he is obliged to it.  Although he may not respond, be sure of seeing him at your house at Berlin after the Leipzig Fair, with a hundred bad excuses which you will laugh at and pretend to believe good ones . . . .  This last month, my wish to see Berlin again has become immeasurable, and I will do my best to have Count Waldstein take me there in the month of October or at least to permit me to go . . . .  You have given me an idea of Berlin far different than that the city left with me when I passed four months there twenty-nine years ago . . . .  If my ‘Icosameron’ interests you, I offer you its Spirit.  I wrote it here two years ago and I would not have published it if I had not dared hope that the Theological Censor would permit it.  At Berlin no one raised the least difficulty . . . .  If circumstances do not permit me to pay you my respects at Berlin, I hope for the happiness of seeing you here next year . . . .”