'Nationalism' is based on the speeches of Tagore delivered during the Swadeshi movement in India and the First World War. While the nations of Europe were doing battle, Tagore urged his audiences in Japan and the United States to eschew political aggressiveness and cultural arrogance. The lectures emphasize Tagore's political and philosophical views on human understanding and its weakness for power and material hoardings. The book depicts the idea of a moral and spiritual growth for human welfare. Tagore's Nationalism holds much relevance in today's environment of violence and intolerance.