Title page from Kant’s Prolegomena and Metaphysical Foundations of Natural Science.

Kant’s Prolegomena and Metaphysical Foundations of Natural Science.

It is here and in the Critique of Pure Reason that Kant attempted to rebuild modern philosophy from its foundations up in order to demonstrate that philosophers (like the rationalists Leibnitz and Descartes) and scietnists would not be able to provide final answers to their questions about the physical world, human nature, the mind, or the supreme being.