Max Weber (1864-1920) was the other giant of early systematic sociology. He trained as a legal and economic historian and had a broad understanding of many cultures. As Weber had a systematic understanding of history and culture, he opposed the Marxist economic determinism of the age, and posited that there did exist Ideal Types of social organization. For example, one of his most famous works was The Protestant Ethic and the Spirit of Capitalism (1904-5), were he posited that the emergence of Protestant ethics, particularly the Calvinist stress on diligence created a productivity and rationalism as Capitalism developed in modern culture.