We love the stories by Clara Dillingham Pierson! They don't always have happy endings, because some of the creatures are naughty and reap the natural consequences of their choices. All the tales have a subtle moral that is left for the child to draw out on his own, while painting a picture of the creatures and their characteristics and habits in a natural way that fits right into the story. It never feels contrived or preachy, or overly "educational," but still educates gently, the WHOLE person, I would say, because of all the ideas that are there to ponder; attitudes (good AND bad), obedience, quarrels, contentment, kindness, friendship, vanity, consequences, family, gossip...in addition to the descriptions of pond creatures, plants, ecosystem, habits, diet, temperament, instinct, "creature features," etc. - all clothed in lovely writing with good vocabulary.