Jean Piaget, famed for his studies of cognitive development in children, was himself a child prodigy. His early observations led to questions which could be answered only by access to a university library. Hoping to persuade the librarian to stop treating him like a child, he wrote and published a short article on the sighting of an albino sparrow. He was ten years old.
[After thousands of interactions with children -- many of them barely old enough to talk -- Jean Piaget began to suspect that behind their seemingly illogical utterances lay thought processes guided by a certain order and peculiar logic. Einstein called it a discovery "so simple that only a genius could have thought of it."]