God from the concept of an original Being is either that which from ontological predicates, by which alone it can be thought as completely determined, infers absolutely necessary being; or that which, from the absolute necessity of the being somewhere of something, whatever it be, infers the predicates of the original Being. For there belongs to the concept of an original Being, inasmuch as it is not derived from anything, the unconditioned necessity of its presence, and (in order to represent this) its complete determination by its [mere] concept.

It was believed that both requirements were found in the concept of the ontological Idea of a Being the most real of all; and thus two metaphysical proofs originated.

The proof (properly called ontological)