Microcosm/Macrocosm
A Microcosm or little world (ie human beings) whose composition and structure corresponds to that of the Macrocosm or great world (the Universe).
Malachias Geiger’s beautiful engraving Microcosmus Hypochondriachus (below) is essentially divided into two realms; the above and the below. The connection between the two is shown in the alchemical and astrological symbols within the engraving.
In the video below Adam McLean gives a wonderful and detailed explanation of the artwork from his Exploring Alchemical Emblems study course.