PEOPLE who think from their deeper rationality can see that there is a connection of all things, through intermediate ones, with a First, and that anything that is not so connected will disintegrate. When they think about it, they know that nothing can exist on its own, but requires something prior to itself, which means that everything goes back to that First. They know that the connection with what is prior is like that of an effect with its efficient cause, since when the efficient cause is removed, the effect comes apart and collapses. Since this has been the thought of the learned, they have both seen and pronounced that existence is a constant becoming, so that all things are constantly coming into being—that is, existing—from that First from which they originated.
But there is no way to explain briefly the nature of that connection of everything with what is prior and therefore with the First that is the source of everything, because it is varied and diverse. We can say generally only that there is a connection of the natural world with the spiritual world that results in a correspondence between everything in the natural world and everything in the spiritual world. (On this correspondence, see Sections 103–115, published June 17-June 25, 2017 and on the connection and consequent correspondence of everything in us with everything in heaven, see Sections 87–102, published June 4-June 12, 2017.)
from Heaven and Hell, Section 303