Imagine being at the pinnacle of your field when a nine-page letter arrives from an unknown clerk in a foreign country, filled with formulas so advanced they look like magic. That is exactly what happened to G.H. Hardy in 1913.

This episode traces the life of Srinivasa Ramanujan, a poor accounting clerk who failed out of college yet became one of history's greatest mathematical minds. We explore the collision of pure intuition with Western rigor, and the tragic toll his genius took on his life.

• How a proofless 5,000-theorem book trained his mind to "see" answers intuitively, like a helicopter pilot over a landscape
• Why he failed college repeatedly, doing math on physiology exams, and nearly died from an untreatable, unaffordable condition
• Hardy's reaction to the letter: theorems that "defeated me completely," judg ...