 It is Windelband’s student Heinrich Rickert who takes up these suggestions and develops them into a systematic account of the “individuating” and “value-relating” “concept-formation” of the “historical sciences of culture” (Rickert 1902). Rickert argues that “scientific concept formation”, by which science overcomes the “extensive and intensive manifold” of reality, depends on a principle of selection. The principle of selection at work in the natural sciences is that of “generalization”. For this reason, the natural sciences cannot account for the unique and unrepeatable character of reality. The historical sciences, in contrast, form their concepts in a manner that allows them to capture individual realities (Rickert 1902: 225, 236, 250–251). They do so on the basis of values: values guide the selection of which particular historical facts belong to and can be integrated into a specific historical “individuality” (examples being “the Renaissance”, “the Reformation” or “the German nation state”). According to Rickert, one can clearly distinguish the theoretical value-relation that is the basis of historical science and practical evaluation. The historian relies on values but does not evaluate his material (Rickert 1902: 364–365). Building on Windelband’s core ideas about historical method, Rickert arrives at a more refined and systematized account of how historical science forms its concepts, that ultimately leads to an account of what culture as an object of scientific study amounts to.