If Infinites of Worlds, they must be plac'd <br />At such a distance, as between lies waste. <br />If they were joyned close, moving about, <br />By justling they would push each other out. <br />And if they swim in Aire, as Fishes do <br />In Water, they would meet as they did go. <br />But if the Aire each World doth inclose <br />Them all about, then like to Water flowes; <br />Keeping them equall, and in order right. <br />That as they move, shall not each other strike. <br />Or like to water wheels by water turn'd, <br />So Aire round about those Worlds do run: <br />And by that Motion they do turne about, <br />No further then that Motions strength runs out. <br />Like to a Bowle, which will no further go, <br />But runs according as that strength do throw. <br />Thus like as Bowles, the Worlds do turne, andrun, <br />But still the Jacke, and Center is the Sun.<br /><br />Margaret Cavendish<br /><br />http://www.poemhunter.com/poem/if-infinite-worlds-infinite-centers/