Beethoven Writes His Letter To the "Immortal Beloved"
It is likely that Beethoven was at Teplitz when he wrote three love letters to an "Immortal Beloved". While the identity of the intended recipient is an ongoing subject of debate, the most likely candidate, according to what is known about people's movements and the contents of the letters, is Antonie Brentano, a married woman with whom he had begun a friendship in 1810.
My angel, my all, my very self - a few words only today, and in pencil (thine). Why such profound sorrow when necessity speaks? Can our love endure but through sacrifice - but through not demanding all - canst thou alter it that thou art not wholly mine, I not wholly thine? ”— Beethoven to his "Immortal Beloved"
Full text of Immortal Beloved letters