IDENTITY OF BEING AND NOT-BEING

Pure Being (that is, substance) is that beyond which, outside which nothing can be conceived. Now, that beyond which nothing can be conceived is unbounded, indeterminate and therefore inconceivable, for we can only conceive things in so far as we determine them. Now that which is inconceivable is that in which nothing can be conceived. But that in which nothing can be conceived is negation, not Being. Pure Being = Pure not‑Being. CRA.

Simile of «substance and shadow». The realities (secondary) are will (substance) and idea (light), (but a light from within, created by the substance) the shadow they produce is the body. This is not a dualism; for the body is held to be but a phainoumenon. On the other hand neither is there a dualism of idea and of will, for these two, being of the same nature cannot constitute a duality. They are one.