The Universe has neither circumference nor centre. If there were a centre and a circumference, then something outside of the world would exist, which is not the case. It is an impossibility that the Universe could be defined by a physical centre and a physical border, and it is not in our power to understand the Universe, of which God is both the centre and the circumference. And although the Universe cannot be infinite, it also can’t be seen as finite because there are no borders to limit it. Nicolas de Cusa (1401-1464)