I was thinking about this the other day. No matter how we contemplate nothingness, in our mind it remains something. The fact that true nothingness in inconceivable means that something is there. Hmmm...sounds a little like a corollary of Descartes.
Could a consciousness that does not exist...conceive of its own non-existence?
Obviously not, thus, Descarte’s famous, “I think, therefore I am”. There is one thing an Evil Genius cannot do: create something that, at the same time, does NOT exist.