Someone actually asked a good question. I'm actually partial to the view that there isn't/doesn't have to be a "base". I think this notion comes from some sort of human bias. Things start and end. Even universes. People are born and people die. But maybe what's behind what we perceive as "life" and "death" isn't as final as it first appears. These things are the result of change, probably the firmest constant of existence. There is no real finality with death, only transmutation into a different form. It's eternal inflation. It's a fractal flow.