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 "Appendix", specifically the discussion distinguishing Kant's own critical or transcendental idealism from other, earlier forms of idealism ranging from that of Parmenides all the way down to Berkeley. Kant asserts that on some matters concerning space, time, experience, the understanding, and reason his idealism is in fact the reverse of the other sort of idealism, and resolves problems that they cannot address. 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