Just before Romeo and Juliet are about to get married, Friar Lawrence is telling Romeo to be moderate. I think he is trying to tell them that they need to not be so extreme when they get married. They think that life will be really easy once they get married, but it won’t. Romeo is really exited about getting married, so Friar Lawrence is telling him to calm down and not be so extreme about stuff, like when he is exited he is really exited but when he is sad he gets really depressed. I think that this is really good advice.