“Don’t hold anyone to an expectation unless you have stated to them what that expectation is.”
Guess who said that? My mom.
It is probably one of her best because it applies in nearly every aspect of life. She typically offered this gem within the context of relationships. It usually involved me complaining about a roommate or a boyfriend because they weren’t doing something I wanted them to do. She almost always followed that complaint with “Well, do they know what you’re expecting?”
My lack of maturity boiled over with “They should just know. It’s common sense.” Or “I shouldn’t have to ask. I want them to want to do the dishes.”