The source from which existing things derive their existence is also that to which they return at their destruction.

Immortal and indestructible, surrounds all and directs all.

The Earth is cylindrical, three times as wide as it is deep, and only the upper part is inhabited. But this Earth is isolated in space, and the sky is a complete sphere in the center of which is located, unsupported, our cylinder, the Earth, situated at an equal distance from all the points of the sky.

There are many worlds and many systems of Universes existing all at the same time, all of them perishable.