The Man Who Knew Infinity (1991), by Robert Kanigel, is a biography of Indian mathematician Srinivāsa Ramanujan. It traces his rise from poverty and early struggles—including illness, academic failures, and lack of recognition in India—to his groundbreaking collaboration with Cambridge mathematician G.H. Hardy. Their partnership produced some of the most original mathematical work of the 20th century. Deeply influenced by both religious tradition and intuition, Ramanujan viewed his insights as divine revelations, even as they reshaped modern mathematics. Despite his early death from tuberculosis at 32, his legacy endures, inspiring generations of scholars and a 2016 film adaptation.
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