 Finally, a complete history of the first half of the 20th century Mexican philosophy would be remiss if it did not discuss the development of Marxism in Mexico, particularly the work of Vicente Lombardo Toledano. Like many of the intellectuals in our survey, the philosophical contribution of Lombardo Toledano is complicated by the fact that he was, perhaps first and foremost, a labor leader and a politician—a scholar-activist—and because he developed many of his ideas through public debate and discourse (cf. the debate between Caso and Lombardo mentioned above). Nevertheless, Lombardo wrote one of the first philosophical analyses of the Mexican Revolution and his works are essential reading for those interested in Marxist interpretations of Mexican themes in the first half of the 20th century.