A story from Gerontikon

Two elder people living as monks for many years, had never quarreled about anything. One day, one says to another: "Let's argue, at least once, about something like people use to do". The other said: "I don't know how to do that". The first monk says: "Look, I'll put this brick right here in the middle. I'll say it's mine and you'll say that it's yours and that's how we'll start arguing". So, they put a brick in front of them. Then, the first monk says: "This brick is mine". The other monk says: "No, it's not yours. It's mine". Then, the first monk says: "Well, if it's yours, take it". And then they instantly stopped arguing without finding any reason to quarrel any more...