In 'The Investment of Influence: A Study of Social Sympathy and Service' by Newell Dwight Hillis, readers are taken on a journey through the importance of social influence and service. Hillis delves deep into the concept of using one's influence for the betterment of society, weaving together anecdotes and philosophical insights to illustrate his points. This book is characterized by its eloquent prose and thought-provoking ideas, making it a valuable addition to the realm of social philosophy and ethics. Hillis invites readers to reflect on the power of their own influence and the ways in which they can positively impact those around them. The book is steeped in the literary context of late 19th-century social reform movements and reflects Hillis' own experiences as a prominent preacher and social advocate of his time. 'The Investment of Influence' serves as a timeless reminder of the importance of using one's influence for the greater good, making it a must-read for anyone interested in social change and personal growth.