Everything is a correspondent that arises and endures in nature according to the divine design. What makes the divine design is the divine good that emanates from the Lord. It begins from him, emanates from him through the heavens in sequence into the world, and there comes to a close in things most remote. Things there that are in accord with the design are correspondences.
The things that are in accord with the design are everything that is good and is perfected for some use, for everything good is good according to its usefulness. Its form reflects what is true because the true is the form of the good. This is why everything in the whole world and in the world of nature that is in the divine design goes back to what is good and what is true.
from Heaven and Hell, Section 107