  Because physics was Kant's primary (though not exclusive) focus over the course of his lengthy career, his views on physics during his pre-Critical (1746-1770), Critical (1781-1790), and Post-Critical periods (after 1790) will be discussed in separate sections. Subsections will be devoted to each of the chapters of Kant's most influential work in philosophy of science, the Metaphysical Foundations of Natural Science (1786). Kant's basic positions on other sciences, including psychology, chemistry, and history, will be presented thereafter.