What is teaching, learning, communication?

To know is to know the story.
To teach is to be able to tell the story.
To learn is to be able to listen to a story and to extract the meaning of it.
Teaching and learning is communicating.
The moment you are able to understand a story you are able to learn and the moment you are able to explain a story you can be a teacher.
Communication is exchanging the stories of our life.