Macrocosm and microcosm is an ancient Greek Neo-Platonic schema of seeing the same patterns reproduced in all levels of the cosmos, from the largest scale (macrocosm or universe-level) all the way down to the smallest scale (microcosm or sub-sub-atomic or even metaphysical-level). In the system the mid-point is Man, who summarizes the cosmos.

The Greeks were philosophically concerned with a rational explanation of everything and saw the repetition of the golden ratio 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."

Today, the concept of microcosm has been dominated 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.

Robert Fludd, also known as Robertus de Fluctibus (17 January 1574 – 8 September 1637) was a prominent English Paracelsian physician. He is remembered as an astrologer, mathematician, cosmologist, Qabalist, and Rosicrucian apologist.

Fludd is best known for his compilations in occult philosophy. He had a celebrated exchange of views with Johannes Kepler concerning the scientific and hermetic approaches to knowledge.

He was born at Milgate House, Bearsted, Kent, the son of Sir Thomas Fludd, a high-ranking governmental official (Queen Elizabeth I's treasurer for war in Europe), and Member of Parliament. He entered St John's College, Oxford in 1591, graduating B.A. in 1597 and M.A. in 1598.

Between 1598 and 1604, Fludd studied medicine, chemistry and hermeticism on the European mainland. His itinerary is not known in detail. On his own account he spent a winter in the Pyrenees studying theurgy with the Jesuits.

On his return to England, Fludd entered Christ Church, Oxford. In 1605 he graduated M.B. and M.D. He then moved to London, settling in Fenchurch Street, and making repeated attempts to enter the College of Physicians. Fludd encountered problems with the College examiners, both because of his unconcealed contempt for traditional medical authorities, and because of his attitude. After at least six failures, he was admitted in 1609. Subsequently both his career and his standing in the College took a turn very much for the better. He was on good terms with Sir William Paddy. Fludd was one of the first to support in print the theory of the circulation of the blood of the College's William Harvey. To what extent Fludd may have actually influenced Harvey is still debated, in the context that Harvey's discovery is hard to date precisely. The term "circulation" was certainly ambiguous at that time.

Hans Florian Zimmer, German pronunciation: [hans ˈfloːʁi̯aːn ˈtsɪmɐ]; (born 12 September 1957) is a German film composer and music producer. He has composed music for over 100 films, including award winning film scores for The Lion King (1994), Crimson Tide (1995), Gladiator (2000), The Last Samurai (2003),The Dark Knight (2008), and Inception (2010).

Zimmer spent the early part of his career in the United Kingdom before moving to the United States. He is the head of the film music division at DreamWorks studios, and works with other composers through the company which he founded, Remote Control Productions.

Zimmer's works are notable for integrating electronic music sounds with traditional orchestral arrangements. He has received four Grammy Awards, two Golden Globes, a Classical BRIT Award, and an Academy Award. He was also named on the list of Top 100 Living Geniuses, published by The Daily Telegraph.

Zimmer was born in Frankfurt am Main, Germany. As a young child, he lived in Königstein-Falkenstein, where he played the piano at home, but had piano lessons only briefly as he disliked the discipline of formal lessons. He moved to London as a teenager, where he attended Hurtwood House school. In an interview with the German television station ZDF in 2006, he commented: "My father died when I was just a child, and I escaped somehow into the music and music has been my best friend."