George Berkeley

George Berkeley is a famous philosopher who had a lot of ideas about how we think of the world. He was a part of a group of philosophers called the 'Idealists', which means that they believed that all things - like people, animals, and places - exist only in our minds. That means that even though things wouldn't exist if we didn't think about them, they still exist in our head. Berkeley helped us understand why it's important for us to think about the things around us, and how it affects how we live our lives.