I want you to know about this extraordinarily thoughtful and inspiring book unlike anything in the evaluation literature. Deborah Rugg spent 30 years fighting the AIDS pandemic throughout the world. She takes us through the twists and turns of the battle against AIDS. In so doing she skillfully and reflectively generates lessons and insights about the role of science in society and the experience of being a scientist and an evaluator. Especially inspiring are stories of the courage and tenacity of the frontline healthcare workers we meet. In this book you’ll learn how Deborah Rugg transitioned from being an epidemiologist to becoming a global leader in the emergent profession of program evaluation. She takes us inside how the United Nations, against enormous political odds, came to designate the year 2015 as the International Year of Evaluation. Deborah helped lead that effort and important subsequent work in operationalizing indicators for the Sustainable Development Goals (SDGs) which constitute the world’s aspirations articulated in the global development agenda for 2030. The book concludes with advice to young people, especially young women, on managing a professional career in a way that fulfills a personal commitment to making the world a better place. The advice offered is hard-won, grounded in overcoming daunting obstacles, thus deeply authentic, and yet graced with humility and deep caring about both.