From the very famous movie, "Kingsman", "Manners Maketh Man" became a famous quote after the movie was released. The sentence was quite a famous one used way before the movie was made.
It is true that little thoughtful actions make of men. Manners aren't the big moves, yet, they are the least thing one can do for another like opening the door, lending something in need, share carrying some heavy objects and so on. However, these little actions are not so easy to do, and so, they do make one stand out among people.
Here is moment of So JiSub, a.k.a So Ganzi, showing what real manners are even to a young lady!
Don't you just love a guy who's great with kids?