"Investment of Influence: A Study of Social Compassion and Service" is the work of the famous American author and spiritualist Newell Dwight Hillis. In his book, the author addresses the concept of social sympathy, the importance of interaction and the contribution of each person to the formation of society. Hillis examines how individual actions can affect the social order, how interaction between people can change relationships in society. The author explores the idea of social service and compassion as key aspects of harmonious human coexistence. He emphasizes the importance of supporting each other, developing empathy and understanding the needs of the community. "Investment of influence" helps readers to consider social relations from a new perspective and to understand the importance of each person in shaping the culture and morality of society. This book will be a useful guide for those interested in social interaction and seeking to make a positive impact on the world around them."