Mary Catherine Bateson is a person who studies how people behave and interact with the world around them. She thinks about how people learn and grow and become who they are. Imagine you are playing with toys and learning new things every day. Mary Catherine Bateson is like your teacher who helps you understand how all these things you are learning fit together and make you who you are. Just like how grown-ups have teachers to help them learn, Mary Catherine Bateson is a teacher for people who want to understand more about how we become who we are as human beings.