This lecture discusses key ideas from the 18th century philosopher Immanuel Kant's work, The Prolegomena to Any Future Metaphysics. Specifically it focuses on his discussion in the Third Part Of The Transcendental Problem: How is metaphysics in general possible? Specifically this bears upon what Kant terms the "psychological idea" or "ideas" of pure reason, which have to do primarily with the consciousness or soul of a human being, and the idea that it is a substance that has permanency. This is an idea of reason which cannot be encountered or confirmed in any experience we could have 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