With people living longer than ever and the world's older population expanding at an unprecedented rate, the Milken Institute Center for the Future of Aging convened the Purposeful Aging Summit in Los Angeles in 2016. Thought leaders from public policy, business, academia, philanthropy, and media gathered to discuss reframing perceptions of aging in the 21st century. The participants acknowledged the importance of overcoming deeply ingrained bias, and the need to shed light on the compelling but little-understood benefits of purposeful aging. They recognized the upside of changing the culture of aging for individuals old and young. This report summarizes the themes, findings, and vision of the Purposeful Aging Summit.