S’incredible how many scanned in books there are on the interweb. Really, very useful. Above image by Robert Fludd.
This is something I wrote last year for an essay about my working practice in comparison to scientific theory –
Pythagoras* and his Golden Ratio, the application of which helped establish the concept for Microcosm and Macrocosm as a unifying theory, first recognised that by understanding the same traits/characteristics that appear in one entity, this knowledge can be applied to other entities of different sizes. Therefore, by using the Golden Ratio, everything can be considered in the same context.
Robert Fludd was one such man to recognise this theory in his work. A Mathematician and an Astrologer, he wrote many books on the subject, and was credited as the first person to use Microcosm and Macrocosm to explain the circulation of blood in the body, to pretty accurate effect. The heart, he suggested, was The Sun. Our blood is the equivalent of Planets in constant orbit about the heart/Sun and the Universe is our body. Such illustrative analogies crop up consistently in his most celebrated work, Utrusque Cosmi, Majoris scilicet et Minoris, Metaphysica, Physica, atque tenchnica Historia.
To go back to a definition for each of the terms referenced –
Microcosm and Macrocosm is the seeing of the same patterns in all levels of the cosmos. From a universal level to a metaphysical or sub-atomic level. It was assumed to have derived during the Rennaisance particularly with the popular use of the Golden Ratio or the Golden Mean or the Fibinacci sequence to aesthetic purposes.