How can it be possible to mold oneself into a »citizen of the world«, encompassing the entire cosmos within oneself? In the educational philosophy of Rabindranath Tagore (1861-1941), winner of the Nobel Prize for literature and celebrated as »India's Goethe«, this is the defining issue. Bildung zum Weltmenschen (Education for the citizen of the world) makes apparent for the first time the close integration of Tagore's complex philosophical and pedagogical thinking. The philosopher, who throughout his life worked to synthesize Indian and Western ideas and implemented this synthesis in practice, proves to be a radical pioneer for a new artistic, intercultural, and spiritual practice in close touch with nature.