Introduction Narendra Nath was earlier name Sudipto Kaviraj : 'remarkable failure' one of the few philosopher of modern india complete failure in politics contribution: Radical Humanism Ideational journey transition in ideas starts as revolutionary associated with Yugantar believed that revolutionary method is way to achieve freedom for india attended lecture by Lala Lajpat Rai in US when went to procure arms dissatisfied with the way of Congress learnt about Marx, went to Mexico and founded 'Communist Party of Mexico' 1920s, 1930s; supporter of marx and critic of gandhi considered gandhi as bourgeois leader reactionary who wants to bring religion in politics gradually became critic of marx, even then considered himself as marxist he was ousted from second communist international due to differences with lenin lenin suggested two step strategy; first support local movements for independence in colonies, then support communist party to establish control Roy was not in fa...