The evidence is crystal clear. When we invest in our children, we all benefit. When Canadian children thrive, Canada thrives. Since 1999, the Honourable Margaret Norrie McCain and the Margaret and Wallace McCain Family Foundation have been gathering the research and developing a bold vision for supporting our youngest citizens and their families. In this series of conversations, we speak with the researchers, educators and economists who have contributed their unique and important perspectives to Early Years Study 4. Each conversation is interesting and compelling on its own but, when combined, the call to action is loud and clear: high quality, early childhood education for ALL."