Mistress in example sentence
What happened was that Aveling's mistress was Marx's daughter, and when both Darwin and Marx were dead, Marx's papers became muddled up with Aveling's papers, and a letter from Darwin saying, "My dear sir, thank you very much but I don't want you to dedicate your book to me," was mistakenly supposed to be addressed to Marx, and that gave rise to this whole myth, which you've probably heard.
More example sentences with word mistress
In the first volume, Swann's Way, the series of books, Swann, one of the main characters, is thinking very fondly of his mistress and how great she is in bed, and suddenly, in the course of a few sentences, and these are Proustian sentences, so they're long as rivers, but in the course of a few sentences, he suddenly recoils and he realizes, "Hang on, everything I love about this woman, somebody else would love about this woman. 
