Nobody can be as agreeable as an uninvited guest.
I haven't heard of anybody who wants to stop living on account of the cost.
Nothing is as irritating as the fellow who chats pleasantly while he's overcharging you.
There's many a slip twixt the blueprints and a new house.
It ain't a bad plan to keep still occasionally even when you know what you're talking about.
Classical music is the kind we keep thinking will turn into a tune.