‘Engels and Marxism’ considers the legacies of Marx and Engels and the relationship of Engels to Marx and his theories. Historical materialism is Engels' most influential intellectual achievement and one which he created alone and expounded effectively. Engels' glosses on Marx render his work more accessible, but inject Engels' own ideas and interpretation and have affected students' approach to Marx ever since. Engels and Marx's relationship was that of mentor and glosser; significant distance existed between them on issues of social science and politics, and they only briefly worked together as joint authors. It was Engels who gave the impression of their agreement on all fundamentals.