The passage of time is a continuing thing. At 18, you're going to live forever, and you are definitely not at 52, so that is a recurring topic. I still think it's the main stuff.
“The fact that the movement was carried on by women who, for the most part, had no money of their own and were totally inexperienced in organization, and that they won their fight in about two generations, makes a story often dramatic and always worth preserving.”