I don't know anyone who perceives and probes the world of children and garners from it such great truth and wisdom as Charles Schulz in his Peanut cartoons.  One year during the Christmas season, he put into drawing and dialogue one of those common exchanges between children that has deep and uncommon meaning.  Sally asked Charlie Brown, "Is it Christmas yet?"  "Four more days," responds Charlie Brown.  "How come it takes so long?" Sally wants to know.  Without even looking…