J. A. Hobson was not a Marxist, but his influence on later Marxist writers was so great that he cannot be ignored in a study of Marxist theories. Lenin drew on Hobson’s ideas, and some writers even talk of a ‘Hobson-Lenin’ theory of imperialism, though that overstates the similarity between them. Baran and Sweezy followed Hobson much more closely than Lenin did, though the similarity between their work and Hobson’s has not been noted as frequently.