The whole field of historical writing concerned with imperialism and the expansion of Europe has always been suffused with moral judgement. Many earlier historians of empire extolled European intervention in other societies as a force for moral, political or intellectual improvement. Yet, from the beginning, radicals castigated empires as immoral, bringers of racism, genocide and underdevelopment. Asian and African intellectuals, in turn, constructed historical narratives that made the liberated nation the bearer of moral progress in history. This paper argues that historians cannot, and should not refrain from moral judgement on particular issues, such as the excesses of slave trade or the official neglect that allowed the famine in British Bengal in 1943 to kill three million people. They should, however, avoid creating grand historical narratives that describe long-term changes, such as the growth of European empires, as moral or immoral, as progressive or wholly pernicious. This approach merely reduces complex developments to simple formulae and can sometimes be misused by contemporary politicians and ideologues.