Children learn right and wrong fairly young. It's the adults who seem to have issues with the truth in our hyper-political, Internet-driven age. Cornelia Spelman, a therapist to children and families, turned her attention to children's books a few years ago.
She enters the realm of critical thinking with her latest work, A Foot is Not a Fish. Just replace the nouns in either part of the sentence, and you've got the beginnings of an important conversation. We have one with the author about separating truth from fiction.