This book describes the lives of 12 people born in Europe and North America during the Second World War. They became leading scholars on the development and prevention of violent human behavior. From the first to the last page, the book introduces contrasting life-stories and shows how their paths crossed to create a relatively unified body of knowledge on how human violence develops and possible prevention methods. The authors describe the similarities and differences in their family background, university training, theories, and collaborations. Not to mention how they differ in research methods, scientific conclusions, and their influence on the research published today. These comparisons celebrates the diversity of their experience and, in turn, their achievements. By knowing this, you can stand on the shoulders of these giants to look to the future of this subject and potentially contribute to its next steps.