[...] Karlsruhe is—off. [...]—We shall see now what is to be done with this new work. I would rather give it for the first time with Tichatschek and Ney, as I know where I am with them. If the performance were to come off in Dresden, I could endure the delay—indeed I should even like this, as it would be very difficult for me to leave Paris this winter. There is work in plenty here, my Mutz. I could not get things straightened out with Roger till yesterday. I was visiting him at his country-place. As you know, the poor fellow lost his arm a little while ago. I took the pianoforte arrangement of Tannhäuser with me, but he had it already and had translated the first scene, which he sang very finely in French. So it is all settled. [...] Consequently I must devote myself exclusively to Paris this winter and the Tristan would simply have been a nuisance. Still, my financial welfare depends on Paris! [...]
Source: Letters of Richard Wagner, Vol. 2, selected and ed. Wilhelm Altmann, trans. M. M. Bozman (J. M. Dent & Sons, 1927), No. 440