Macrocosm and microcosm
Macrocosm and microcosm (from Greek meaning "large world" and little world") refer to an esoteric and philosophical concept in which there is a correspondance between something small (such as an individual) and something larger (such as society or the world). Claimed such correspondances are used in various esoteric systems, such as in divination systems looking for various signs claimed to correspond to larger events.
History
Macrocosm and microcosm is an ancient Greek schema of seeing the same patterns reproduced in all levels of the cosmos. It may have begun with Democritus in the 5th century B.C. or with Pythagoras and is a philosophical conception that runs through Socrates, and Plato all the way to the Renaissance. With Pythagoras, the discovery of the golden ratio and its philosophical conception called the Golden mean, the Greeks observed the golden ratio in many parts of the ordered universe both large and small. Philosophically, the Greeks were concerned with a rational explanation of everything and saw the repetition of the golden mean throughout the world and all levels of reality as a step towards this unifying theory. In short, it is the recognition that the same traits appear in entities of many different sizes, from one man to the entire human population. Macrocosm/microcosm is a Greek compound of μακρο- "Macro-" and μικρο- "Micro-", which are Greek respectively for "large" and "small", and the word κόσμος kósmos which means "order" as well as "world" or "ordered world".
The English physician and alchemist Robert Fludd (1574-1637) expicitly based his work Utriusque Cosmi Historia (The history of the two worlds) upon the macro/micro correspondence; as did Sir Thomas Browne in his binary Discourses of 1658: Hydriotaphia, Urn Burial depicts the small, temporal world of man, whilst The Garden of Cyrus represents the macrocosm, in which the ubiquitous and eternal quincunx pattern is discerned in art, nature and the Cosmos. The great enigma of alchemy is the mystery between the macrocosm and microcosm. Today, the concept of microcosm has been taken over by sociology to mean a small group of individuals whose behavior is typical of a larger social body encompassing it. A microcosm can be seen as a special kind of epitome. Conversely, a macrocosm is a social body made of smaller compounds.