"Dear Beethoven: You are going to Vienna in fulfillment of your long-frustrated wishes. The Genius of Mozart is still mourning and weeping over the death of her pupil. She found a refuge but no occupation with the inexhaustible Haydn; through him she wishes once more to form a union with another. With the help of assiduous Labour you shall receive Mozart's spirit from Haydn's hands. Your true friend, Waldstein."
-wishing Beethoven well in when he finally left Bonn for good in November of 1792. Mozart had died eleven months prior, in December of 1791.