This lecture discusses key ideas from the 18th century philosopher Immanuel Kant's work, The Prolegomena to Any Future Metaphysics. Specifically it focuses on the conclusion of the third part, specifically the distinction that Kant makes between bounds or boundaries (Grenzen) and limits (Schranken). Pure mathematics and pure natural science have limits but not bounds, because they deal with what is homogenous (gleichartig), whereas the field of metaphysics has both bounds and limits To support my ongoing work, go to my Patreon site - www.patreon.com/sadler If you'd like to make a direct contribution, you can do so here - www.paypal.me/ReasonIO - or at BuyMeACoffee - www.buymeacoffee.com/A4quYdWoM You can find over 3,000 philosophy videos in my main YouTube channel - www.youtube.com/user/gbisadler Purchase Kant's Prolegomena to Any Future Metaphysics - amzn.to/49pc1Xm