  Though Kant is sometimes quite strict about what qualifies as science “proper,” we have seen that he clearly accepts that other disciplines, such as chemistry and psychology, can be scientific in some other sense. (Kant is also extremely interested in providing an explanation of the nature and origin of organisms, which is central to an account of biology. For a more detailed description of Kant's stance on biology, see the entry on his views on aesthetics and teleology.)  However, his explicit reflections about science (taken broadly so as to encompass not only “Wissenschaft” but any kind of “Lehre” or “Kunde”) extend even further so as to include bodies of cognition such as history, physical geography, and anthropology. (Even in the Metaphysical Foundations Kant leaves room for such “scientific cognition” by dividing the doctrine of nature into natural science — e.g., physics — and the historical doctrine of nature, which is separated further into natural description and natural history, 4:468). In the case of historical sciences, Kant views its cognitions as related not by subordination (as is the case in physics), but rather by coordination, since historical facts cannot be derived from each other, but rather merely related to each other in space (geographically) and time (chronologically). Kant views anthropology as overlapping to some extent in subject matter with empirical psychology.  What enables the coordination of facts in each of these domains is not a theoretical, but rather a practical idea. In the case of history, it is the idea of reason (or freedom) that provides a guiding principle of coordination (cf. Kant's “Idea for a Universal History from a Cosmopolitan Point of View”), while anthropology is framed by the cosmopolitan moral ideal of the world-best. Thus, it is clear that Kant's emphasis on physics throughout his career did not blind him to the value of other sciences, nor did it keep him from reflecting creatively on how best to account for them from the perspective of his Critical philosophy.