1. Sliced horizontally, it would look like a circle, or a closed universe . 2. And in a closed universe , theirs or ours, tolerance is survival's way. 3. closed universe which had implications about the existence of God.4. Currently each system is in effect a closed universe . 5. Relativity predicts that a closed universe contains more matter and energy than a certain fixed amount. 6. Like Earth's surface, this model has no edges and would seem to require a closed universe . 7. They pictured a finite, closed universe in the shape of a sphere, only in four dimensions. 8. It can display itself without awareness, with absolute confidence, deflecting all argument, content within its closed universe . 9. A closed universe has no boundary. 10. Also in this monograph, Tolman was the first person to document and explain how a closed universe could equal zero energy.