"The Investment of Influence" is a book written by Newell Dwight Hillis, an American clergyman, motivational speaker, and author, originally published in 1897. In this book, Hillis explores the concept of influence and its profound impact on individuals and society. The central premise of the book revolves around the idea that every person possesses a certain amount of influence, whether they realize it or not. Hillis argues that influence is not limited to those in positions of power or authority but is rather a universal force that shapes human relationships and shapes the course of history. Throughout the book, Hillis examines various aspects of influence, including its sources, mechanisms, and ethical implications. He explores the ways in which individuals can leverage their influence to effect positive change in the world, emphasizing the importance of character, integrity, and moral courage in wielding influence responsibly. Hillis also discusses the different forms of influence, ranging from the subtle persuasion of everyday interactions to the transformative power of visionary leadership. He illustrates his points with examples from history, literature, and personal experience, offering readers practical insights into the art of influence. Moreover, Hillis emphasizes the importance of investing one's influence wisely, recognizing that influence is a valuable resource that should be used for the greater good. He encourages readers to cultivate their influence intentionally, seeking to inspire, motivate, and empower others to reach their full potential. Overall, "The Investment of Influence" is a thought-provoking exploration of the nature of influence and its potential to shape the world. Hillis's book offers timeless wisdom and practical guidance for anyone seeking to make a positive impact on their community and beyond.