The classification of strengths presented in this book is intended to reclaim the study of character and virtue as legitimate topics of psychological inquiry and informed societal discourse. By providing ways of talking about character strengths and measuring them across the life span, this classification will start to make possible a science of human strengths that goes beyond armchair philosophy and political rhetoric. We believe that good character can be cultivated, but to do so, we need conceptual and empirical tools to craft and evaluate interventions.