Joan Robinson, is widely considered to be amongst the greatest economists of the twentieth century. She was one of Keynes’s circle of trusted colleagues, studying the theoretical possibilities offered by his The general theory. This comprehensive study recounts her intellectual development and her major contributions, examining her role in the making of The general theory; her sympathetically critical interest in Marxian economics; her contributions to Labour Party policy in the 1930s and 1940s; her writings on development in China and India and her critique of the conceptual foundations of mainstream economics.