帝国主義論
He is best remembered as the author of "Imperialism: Pioneer of Capitalism". This unconventional Marxist analysis was published posthumously in 1980 and is still being debated. He rejected the argument of Lenin's Imperialism, the Highest Stage of Capitalism, that capitalist development outside of Europe had ceased to be possible. He considered that he was restoring the original view of Marx and Engels, particularly in regard to the results of Britain's rule in India: namely that imperialism plays a progressive role in fostering the spread of capitalism worldwide, which is a prerequisite for socialism.