When European missionaries first arrived in India in the sixteenth century, they entered a world both fascinating and bewildering. Hinduism, as they saw it, was a pagan mess: the worship of devils and monsters by a people who burned women alive, performed outlandish rites and fed children to crocodiles. But soon it became clear that Hindu ‘idolatry’ was far more complex than white men’s stereotypes allowed, and Hindus had little desire to convert. But then, European power began to grow in India, and under colonial rule, missionaries assumed a forbidding appearance. During the British Raj, Western frames of thinking gained ascendancy and Hindus felt pressed to reimagine their religion. This was both to fortify it against Christian attacks and to resist foreign rule. It is this encounter which has, in good measure, inspired modern Hinduism’s present shape. Indeed, Hindus subverted some of the missionaries’ own tools and strategies in the process, triggering the birth of Hindu nationalism, now so dominant in the country.