Suppose the following X is not necessarily not Y. If X is Y then X necessarily cannot be Z. Does that mean X cannot be Z? I probably screwed up stating that... To clarify The first line is meant to be a solipsistic statement - I may be all there is. The second line is meant to state that if I am all there is then I cannot imagine being annihilated. In the third line I conclude that I cannot imagine my annihilation. I'm not concluding that we must "live" forever in oblivion but it's kinda the idea.