Finded. The texts are adaptations from two different letters, translated by Emily Anderson. One letter is from Leopold Mozart to his son W.A.Mozart in 1778, that originally says:"Oh my dear son, when you were a child, I gave up all my time to you in the hope that not only would you be able to provide later on for yourselves, but also that I might enjoy a comfortable old age, be able to give an account to God of the education of my children, be free from all anxiety, devote myself to the welfare of my soul and thus be enable to meet my death in peace. If you stay away I’ll die much sooner. If I could have you leave with me I’ll live several years longer". The other letter is from W.A.Mozart to his father in 1781 that originally says: "Oh my dear papa. He knows that my sole aim is to help you and to help us all. Must I repeat it a hundred times thet I can be of more use to you here in Vienna then there in Salszburg? I implore you, dearest, most beloved father, for the future to spare me such letters. I entreat you to do so, for they only irritate my mind and disturb my heart and spirit; and I, who must now keep on composing, need a cheerful mind and a calm disposition.”