Kant's Transcendental Idealism

Kant said that all knowledge is really merely phenomenal meaning it has to do with phenomena or appearances and there's this limit to our knowledge the other side of which is you could say numinal would be his word but he also talks about the realm of things in themselves. So we're left in this dualistic situation right and one way again of talking about threshold I'm trying to cross in the course of this book is this phenomenal numinalfigure trying to figure out what happens when two different kinds of being exist in the world. That kind of culminates into this idea of transcendental idealism if you will.