| 395 | It seems possible that there exists a limited number of other worlds apart from this one [Aristotle] |
| 14036 | There are endless cosmoi, some like and some unlike this one [Epicurus] |
| 21111 | It seems likely that cosmic inflation is eternal, and this would make a multiverse inevitable [Krauss] |
| 22946 | The multiverse is distinct time-series, as well as spaces [Le Poidevin] |