War Taxation: Some Comments and Letters is a thought-provoking collection of essays and correspondence by Otto Hermann Kahn, originally published in 1917 during the height of World War I. In this book, Kahn, a prominent banker and philanthropist, addresses the pressing issue of war finance, focusing particularly on the methods and implications of taxation as a means to support the enormous costs of war. Through a series of articulate and insightful letters, Kahn engages with both critics and supporters, dissecting the economic, social, and moral dimensions of war taxation. The book delves into the challenges faced by governments in raising funds for military expenditures, weighing the merits and drawbacks of various taxation strategies, including income taxes, excess profits taxes, and other fiscal measures. Kahn argues for a balanced approach that ensures the financial stability of the nation while maintaining fairness and equity among its citizens. He warns against the dangers of excessive or poorly structured taxation, which could stifle economic growth, discourage investment, and create social unrest. Kahn's commentary is informed by his deep understanding of finance and his commitment to public service. He emphasizes the importance of patriotism and shared sacrifice, urging citizens to support the war effort not only through taxes but also through voluntary contributions and the purchase of war bonds. At the same time, he cautions policymakers to consider the long-term consequences of their decisions, advocating for prudent fiscal management and transparency. War Taxation: Some Comments and Letters offers a unique window into the economic debates of the early 20th century, reflecting the anxieties and aspirations of a society at war. It remains a valuable resource for historians, economists, and anyone interested in the intersection of finance, public policy, and national security. Through its clear prose and reasoned arguments, the book invites readers to reflect on the enduring challenges of funding collective endeavors in times of crisis.