Gertrud

“He looked at her as a man looks at a faded flower he has gathered, with difficulty recognizing in it the beauty for which he picked and ruined it. And in spite of this he felt that then, when his love was stronger, he could, if he had greatly wished it, have torn that love out of his heart; but now when as at that moment it seemed to him he felt no love for her, he knew that what bound him to her could not be broken.”
― Leo Tolstoy, Anna Karenina

“Not one word, not one gesture of yours shall I, could I, ever forget...”
― Leo Tolstoy, Anna Karenina

“Love is a verb, not a noun. It is active. Love is not just feelings of passion and romance. It is behavior. If a man lies to you, he is behaving badly and unlovingly toward you. He is disrespecting you and your relationship. The words “I love you” are not enough to make up for that. Don’t kid yourself that they are.”
― Susan Forward, When Your Lover Is a Liar: Healing the Wounds of Deception and Betrayal

“Himmlisch ist's wenn ich bezwungen Meine irdische Begier; Aber doch wenn's nich gelungen Hatt' ich auch recht huebsch Plaisir!

Loosely translated:

It is heavenly, when I overcome
My earthly desires
But nevertheless, when I'm not successful,
It can also be quite pleasurable.”
― Leo Tolstoy, Anna Karenina