
The building blocks of astrology: the elements - Earth, Water, Fire, Air, and the modes or qualities: Cardinal, Fixed and Mutable, were bequeathed to Western astrology by the Greeks via their illustrious philosophers. The elements, by the way, equate to what modern physics has identified as the four states of matter - building blocks of the Universe: solid, liquid, gas and plasma.
Less serious modern-day wits have other ideas. Author Terry Pratchett has a character in one of his books stipulating that the universe depends for its operation on the balance of four forces which can be identified as "charm, persuasion, uncertainty and bloody-mindedness.” While comedian Dave Barry has it on good authority that "the four building blocks of the universe are fire, water, gravel and vinyl."
Jokes aside, without a basic understanding of how the elements relate to each other, it'd be impossible to "get" astrology. The four elements, each modified by one of the three modes/qualities are the the root of all interpretations.
The circle we use to depict the sky in astrology is split into 12 equal segments, each allocated to an element, modified by a mode (eg. Aries = Cardinal Fire, Taurus = Fixed Earth...) It's possible, with an understanding of each element and mode, to produce a basic interpretation of a chart using only these concepts, ignoring labels placed on signs by ancient astrologers.
The elements and modes progress around the zodiac circle, alternating in regular succession, forming wave-like patterns. If spread out in line the patterns looks like this ~ please excuse the awful diagram! F=Fire. E=Earth. W=Water. A=Air.....C=Cardinal. Fx=Fixed. M=Mutable. Wave above line =Elements. Wave below = Modes. To avoid more confusion I've ignored a third quality - Polarity (positive/negative or masculine/feminine), which would form another wave, alternating between signs, starting at Positive = Aries.

Why? Did those Greeks, long ago, grasp, intuit, or have access to some lost knowledge which led to this particular way of laying out the zodiac? More questions than answers - as usual!
The elements and modes are factors amid a plethora of astrological principles and methods, which remain completely reliable and consistent. They never let you down. As I see it, something somehow connected to these will, one day, explain (partially) why astrology works.
From a book "The Night Sky" by Richard Grossinger, I found a paragraph which may or may not have any relevance in this context, but it caught my eye as I searched for information.
I'm not at all sure where that took me! I'm attracted by the echo of astrological elements and modes and the way they were arranged by ancient astrologers, who had no knowledge of periodic tables and suchlike - as far as we know. One place it did take me is to a confidence that astrology is more than mere superstition. It's something rooted in the very nature of the universe. It's rough and ready, imperfect and encumbered with a range of unnecessary accessories, but beneath it all there is a gem. I can't say it better than the wonderful Carl Sagan said it..."Somewhere, something incredible is waiting to be known."
Less serious modern-day wits have other ideas. Author Terry Pratchett has a character in one of his books stipulating that the universe depends for its operation on the balance of four forces which can be identified as "charm, persuasion, uncertainty and bloody-mindedness.” While comedian Dave Barry has it on good authority that "the four building blocks of the universe are fire, water, gravel and vinyl."

The circle we use to depict the sky in astrology is split into 12 equal segments, each allocated to an element, modified by a mode (eg. Aries = Cardinal Fire, Taurus = Fixed Earth...) It's possible, with an understanding of each element and mode, to produce a basic interpretation of a chart using only these concepts, ignoring labels placed on signs by ancient astrologers.
The elements and modes progress around the zodiac circle, alternating in regular succession, forming wave-like patterns. If spread out in line the patterns looks like this ~ please excuse the awful diagram! F=Fire. E=Earth. W=Water. A=Air.....C=Cardinal. Fx=Fixed. M=Mutable. Wave above line =Elements. Wave below = Modes. To avoid more confusion I've ignored a third quality - Polarity (positive/negative or masculine/feminine), which would form another wave, alternating between signs, starting at Positive = Aries.

Why? Did those Greeks, long ago, grasp, intuit, or have access to some lost knowledge which led to this particular way of laying out the zodiac? More questions than answers - as usual!
The elements and modes are factors amid a plethora of astrological principles and methods, which remain completely reliable and consistent. They never let you down. As I see it, something somehow connected to these will, one day, explain (partially) why astrology works.
From a book "The Night Sky" by Richard Grossinger, I found a paragraph which may or may not have any relevance in this context, but it caught my eye as I searched for information.
In 1869, the Russian chemist Dmitri Mendeleev discovered that the chemical properties of the elements (My note: this refers to the non-astrological elements)are periodic functions of their atomic weights, i.e. of the number of protons in their nuclei. When he arranged the then-known elements in a series, he found that there were familial resemblances among elements at regular numerical intervals. For instance, carbon, silicon and tin lie in a series for which the member between silicon and tin was then apparently missing. This was later found to be germanium. Fluourine, chlorine, bromine and iodine constitute another family. Then there's a group of lithium, sodium and potassium; another of nitrogen phosphorus, arsenic and antimony; and so on. Nature contains a hidden periodic function which is basic to form and order in the world. (My note: There are "families" in astrological elements too, at regular numerical intervals - the Fire family Aries, Leo, Sagittarius, the Air family Gemini, Libra, Aquarius etc.) All the other elements are based on the simplest one, hydrogen with its single proton, which is also - we were to find out - the fuel of the stars.
Mendeleev's periodic table, and the reality that lay behind it gave a new basis for understanding the history and evolution of matter. Mathematical relationships determined the seemingly limitless display of forms in nature, from plants and animals to stars and galaxies. It was hauntingly Pythagorean, as Heisenberg would remind us.
I'm not at all sure where that took me! I'm attracted by the echo of astrological elements and modes and the way they were arranged by ancient astrologers, who had no knowledge of periodic tables and suchlike - as far as we know. One place it did take me is to a confidence that astrology is more than mere superstition. It's something rooted in the very nature of the universe. It's rough and ready, imperfect and encumbered with a range of unnecessary accessories, but beneath it all there is a gem. I can't say it better than the wonderful Carl Sagan said it..."Somewhere, something incredible is waiting to be known."