Macrocosm:

A macrocosm is the larger whole of a system, usually referring to the whole of the cosmos.

 

This idea was first thought to be proposed by Pythagoras, but was later popularized by hermeticism through the understanding of the principle of correspondence. The principle of correspondence which states; “That which is Below corresponds to that which is Above, and that which is Above corresponds to that which is Below, to accomplish the miracle of the One Thing.” This understanding presents the idea that there is a similarity of pattern, nature, or structure between smaller, and larger aspects of existence. This understanding was originally applied to the connection between humans, and the universe, and was also a foundation for some forms of panpsychism.

By understanding one you can understand the other, and through this understanding we can gain knowledge of how things work, especially if we are unable to explore, and comprehend the macrocosm. The microcosm will always reflect the macrocosm, and vice versa.This is a beautiful understanding to have, and it is not only good to hold in the understanding of magick, but is also important in the understanding of the universe itself. By learning how to affect one in specific ways we can learn to affect another allowing us to learn about, and be able to effect all of the aspects of existence.