Page:Diplomacy and the Study of International Relations (1919).djvu/64

 touching the Emperor Napoleon’s visit to Salzburg in 1867, or the more highly polished Voltairean irony of Frederick II, of which one may instance, in particular, his letters to Louis XV just before the Christmas treaties of 1745, and the letter of Christmas Day of that year. To Frederick, who had himself been a doubtful ally, Louis, another doubtful ally, had written, in effect, according to Frederick: if misfortune should befall you, you have my promise that the Academy will deliver a funeral oration over your kingdom. In his letter of Christmas Day, Frederick said:

and to remain the most affectionate brother of his Most Christian Majesty. On the same day, in a communication