" The extensive and detailed calculations of William Digby, the British writer, pointed to the diminishing prosperity of the Indian people and the systematic expropriation of India’s wealth by Britain—including the telling fact that the salary of the Secretary of State for India in 1901, paid for by Indian taxes, was equivalent to the average annual income of 90,000 Indians. "

― Shashi Tharoor , An Era of Darkness: The British Empire in India