This chapter discusses Max Weber's aims in the ‘Sociology of Law’. Before exploring in detail Weber's ‘Sociology of Law’, its essential assumptions and conclusions, as well as its conceptual apparatus, it is necessary to outline briefly its two opening sections. In the first section, established areas of the law are treated in brief, such as public law, private law, criminal law, procedural law, and substantive law. In the second section, the most important forms/categories of subjective law are presented in overview, including the classical civil rights and liberties. Weber also provides an overview of contract and the development of freedom of contract. For all their heterogeneity, Weber's remarks in his ‘Sociology of Law’ can be brought together into a historically grounded ‘theory’ of the rationalization of the law and its developmental conditions. This theory of the rationalization of the law has various basic ‘building blocks’. First and foremost, it requires a standard measure for the level of rationalization that has been reached. In a process of rationalization, ideal-typical stages of development are required. Weber also pays particular attention to two basic types of legal training or legal teaching: first, the ‘craft’ approach in the sense of the ‘empirically’ driven training of lawyers; and second, university education organized in a theoretical and academic manner.