Start with the ancient history first…
The Personification of Astrology
All the way back to 10,000 B.C., the sun has been worshiped as one of the most important and amazing objects for ancients to see. It is easy to understand why, especially for the ancients. Every morning it would rise, following the rise of the sun would come light, safety, warmth. Thus, saving these ancient civilizations from the cold, dark, predator filled night. These ancient civilizations understood that without the sun, plants could not grow, crops would not flourish, and life itself would not be able to continue. Obviously, this made the sun the most important and crucial thing to the ancients. Not to mention, with nothing else to do at night, and the interests of the heavens above, these ancient people were also very familiar with the stars and the layout of them. The stars were very useful to them; they used stars to track and anticipate events that would occur over long periods of time. Examples of this would be eclipses, full-moons, and solstices. By doing this, they knew the appropriate time to farm, hunt, and many other things. A lot of actions that these ancients would do would depend on the location of the stars at that current time. These ancients then categorized a specific collective of stars into what we know today as constellations. As a result of the knowledge of the sun and its location, and the location of the constellations, the cross of the zodiac was born, one of the oldest conceptual images in human history.
http://www.abovetopsecret.com/forum/thread1042389/pg1
The Zeitgeist (spirit of the age or spirit of the time) is the dominant set of ideals and beliefs that motivate the actions of the members of a society in a particular period in time. For example, the Zeitgeist of modernism motivated the creation of new forms in the fields of architecture, art, and fashion during much of the 20th century.
Zeitgeist:
https://youtu.be/pTbIu8Zeqp0