Introduction to the Golden Section: the never-ending mistery

Ancient populations (far apart in distance and time) are linked one to another by a mistery, upon which archaeologists, astronomers, mathematicians, artists, psychologists, historians etc. are still working: the Golden Section.
The Golden Section, also called Golden Ratio, is usually defined as it follows: “two quantities are in the golden ratio if the ratio between the sum of those quantities and the larger one is the same as the ratio between [...]