The following discussion is metaphysical, ontological and epistemological. It discusses what can be known and what can exist. The author begins by claiming there is a class or category of thing that is knowable. If a class of things are not knowable, this class of things cannot fulfill the conditions of existence. God is the only knowable thing and the only thing that fulfills all the conditions of existence. All other knowables that exist must be derived from the one knowable thing. The propositions discussed here must be understood and accepted to move forward and understand what we can know to exist and what is illusory and false.