What are the most unique things about Friar Lawrence that are not found in any other characters in the play?

To me, what is different about Friar Lawrence is that he is the only one in the play who does not really have a selfish goal in mind.  He is trying to help everyone else instead of trying to get something for himself.  So even though he messes it all up and causes everyone to die, at least he meant well.

All that Friar Lawrence wants is for the feud between the Capulets and Montagues to end.  That is not a selfish motive.  All the things he does are aimed towards that goal.  Of all the people in the play, only he has a goal that is not mostly tied to himself.