"That's what X'mas is all about, Charlie Brown"

In A Charlie Brown Christmas, everyone is very much into the spirit of the season, but not the real spirit, the real Reason why we have Christmas in the first place -- that is, except Charlie Brown. "Ohhh, even my little sister!" he groans in one scene, exasperated that even Sally has fallen into the commercialism trap that pervades the Yuletide season. "If it seems too complicated, make it easy on yourself. Just send money. How about 10's and 20's?" Sally dictates to Charlie Brown, who is helping her with her Santa's list.

Probably the simplest way in which one can explain the true meaning of Christmas is in the scene below -- from the award-winning 1965 TV special, A Charlie Brown Christmas -- with Linus giving a monologue of sorts. That it comes from a simple child gives it (in my opinion) much impact.