It is not only Mill but his biographers, and many scholars as well, who have been loathe to recognize that Mill's 35-year tenure at the India Office may have something to say about his life and work, his views on political liberty and subjection, the idea of representative government, British imperialism (with particular reference to India), and many of the large number of other subjects on which he penned his thoughts. The standard biography of Mill makes no mention of his time at the India Office, and Bruce Mazlish, in his James and John Stuart Mill, an intellectual psychobiography of father and son, is constrained to admit that "India represents a curious lacunae in John Stuart Mill's intellectual life". The scholarship on Mill, which is very considerable, is predicated largely on the supposition that Mill's work at the India Office was merely a diversion, and that it could not have had any bearing on his work as a well-known public philosopher and political economist; and so a recent assessment maintains the distinction between Mill's career at the India House and his "theoretical priorities in economics and social organisation". Most pointedly, Eric Stokes, in his authoritative study on utilitarianism as an aspect of Britain's policy in India, justified the omission of a serious consideration of John Stuart Mill's role in the creation of Indian policy with the argument that the younger Mill had "neither his father's opportunities nor his bent for the practical realization of the Utilitarian theories".
from Manas