"Joe was very possessive. I was perfectly faithful. He would beat me, screaming imprecations, 'You slut!' when another man looked at me. After I left, I decided he was right — I am a slut, I want to be a slut, I will never promise monogamy again. After all, why would anyone care who I fucked? I will never be a piece of property again, no matter how valuable that property is considered. Joe made a feminist of me. A feminist slut."
January 1, 1970
https://en.wikiquote.org/wiki/The_Ethical_Slut