This document outlines Kant's thesis that being is not a real predicate. It discusses Kant's rejection of the ontological proof for God's existence, which tries to prove God exists from the concept of God alone. For Kant, existence does not belong to the determinateness of any concept. The document then explains some of Kant's key terminology, such as how he distinguishes between being, existence, reality, and actuality. It analyzes Kant's view that existence involves absolutely positioning a thing, rather than relating it to other things through predication. In existential assertions, the entire conceptual content is posited in relation to the object itself.