Kant on the Way to His Own Philosophy of Logic
This chapter considers how Kant, from the mid-1760s through the mid-1770s, navigated between existing accounts of logic before finding his own voice. It highlights two breakthroughs that would contribute most to his mature theory of logic. The first breakthrough concerns Kant’s division of logic into two essentially different though complementary branches: a logic for the learned understanding and one for the common human understanding (to make it healthy), precursors to “pure logic” and “applied logic” respectively. This distinction not only marks a clear departure from the Leibnizian-Wolffian take on the relation between artificial and natural logics, but also pays homage to the humanist and Lockean practices of emphasizing certain ethical dimensions of logic. The second breakthrough is the emergence of “transcendental logic” from Kant’s efforts to secure metaphysics—particularly the first part thereof, ontology—as a proper science.