This is classic Leo Lionni. While other were sleeping, Tillie was wide awake wondering what fantastic world might be on the other side of the Wall. With grit and determination, Tillie tries various ways to find a way around it. No one had seemed too interested in anything outside their experiences until Tillie shows them the way. As relevant today as it was upon its publication, as the Tillies of the world continue to break down barriers accepted by others.