An infinite body, according to us, is neither potentially nor actually mobile, neither light nor heavy potentially or actually. - Giordano Bruno

"There is no top or bottom, no absolute
positioning in space. There are only positions that are relative to the others.
There is an incessant change in the relative positions throughout the universe
and the observer is always at the centre".

There are countless suns and countless earths all rotating round their suns in exactly the same way as the seven planets of our system. We see only the suns because they are the largest bodies and are luminous, but their planets remain invisible to us because they are smaller and non-luminous. The countless worlds in the universe are no worse and no less inhabited than our earth. For it is utterly unreasonable to suppose that those teeming worlds which are as magnificent as our own, perhaps more so, and which enjoy the fructifying rays of a sun just as we do, should be uninhabited and should not bear similar or even more perfect inhabitants than our earth. The unnumbered worlds in the universe are all similar in form and rank and subject to the same forces and the same laws. Impart to us the knowledge of the universality of terrestrial laws throughout all worlds and of the similarity of all substances in the cosmos! Destroy the theories that the earth is the center of the universe! Crush the supernatural powers said to animate the world, along with the so-called crystalline spheres! Open the door through which we can look out into the limitless, unified firmament composed of similar elements and show us that the other worlds float in an ethereal ocean like our own! Make it plain to us that the motions of all the worlds proceed from inner forces and teach us in the light of such attitudes to go forward with surer tread in the investigation and discovery of nature! Take comfort, the time will come when all men will see as I do.

Ninthly, only verbally is it possible to deny infinite space, as is done by pertinacious fellows. For the rest of space where the universe is not, which is called void, where indeed it is pretended that nothing doth exist, cannot be conceived as without the capacity to contain no less a magnitude than that which it doth contain.

Tenthly, since it is well that this world doth exist, no less good is the existence of each one of the infinity of other worlds.

Eleventhly, the virtue of this world is not communicable to any other world soever, just as my being cannot be communicated to the being of this or of that man.