To say "all that which does not exist" is to introduce, effectively, a new concept, but it does not bring into existence anything more than that very concept which it introduces. That is, a certain entity about which we know nothing except that it bears the name of "all that which does not exist.

If every word introduces a new concept, the simple phrase "all that which does not exist" is sufficient to make everything that does not exist, exist.

I am who Iam, I enjoy life in my own way and that is hell of a lot more than most people can say for themselves