Give the same piece of bad news to four people and watch the first ten minutes. One is already on the phone trying to fix it. Another opens a notebook and works out what it is going to cost. The third needs to talk it through until it makes sense. The last one goes quiet and feels the full weight of it before doing anything at all. Nobody in that room reacted wrongly. They reacted in four different manners. Astrology has been sorting manners into those same four groups for a very long time. It calls them fire, earth, air and water.
The last lesson ended on a promise that the twelve signs are organized. This is the first half of that organization. Every sign belongs to one element and every element holds three signs. Learn the four well and you already know a good part of what any sign is about before reading a single line on it. The idea is ancient. It comes from the old picture of a world made of four elements and it has been part of astrology since its classical form. It was built as a working tool long before anyone turned it into a personality quiz.
Fire
Aries, Leo and Sagittarius. Fire moves first and asks questions afterwards. It runs on enthusiasm and on a sort of faith that things work out once you start. It tends to light up whatever it touches. People with a lot of fire usually bounce back fast. They get bored even faster. The cost shows up when nothing is happening, because fire struggles with waiting and with any job that only pays off a year from now.
Earth
Earth trusts what it can touch. Taurus, Virgo and Capricorn work through the body and the senses, through results that can be counted and kept. There is a patience in earth the other three rarely manage, the willingness to do the dull part well because the dull part is where things actually get built. Its trouble is the mirror image of fire's. Earth can stay in a job or a habit long after it stopped serving, simply because it is familiar and the familiar feels safe.
Air
The air signs are Gemini, Libra and Aquarius. What they do is think. Air names things and connects them to other things. It needs a little distance from an experience to understand it. That is why it tends to step back and compare and look for the pattern. That distance is a gift in an argument or a crisis. In a relationship it can turn into explaining a feeling instead of having one.
Water
Water feels first. For Cancer, Scorpio and Pisces the emotional temperature of a room arrives before a single word is spoken in it. Water remembers and bonds and absorbs, sometimes too much. It often senses things it cannot explain yet, a hunch about someone that turns out right months later. The risk is drowning. A chart heavy in water can carry other people's moods home as if they were its own.
An element on an actor
Remember that a sign does nothing until it sits behind a planet. The element is a large part of what it brings. Put the Moon, your emotional needs from the fourth lesson, in a fire sign and it tends to need excitement, something ahead to look forward to. Put the same Moon in an earth sign and what it needs is close to the opposite. Routine and good food and a body that feels looked after. Neither Moon is better off. They are hungry for different things and the element tells you which.
On the wheel the elements repeat in a fixed order. Fire, earth, air and water, then fire again, three full rounds to fill the twelve. So the three signs of any element always sit four signs apart, spread evenly around the circle in the shape of a triangle. That shape becomes obvious when the whole grid comes together in lesson twelve.
Counting your own
You can do this right now with your wheel. Take the ten planets and write down the element of the sign each one sits in, then count. The Sun and the Moon weigh more than the rest for the reasons in lesson four. Many astrologers count each of them twice. Most charts lean clearly toward one or two elements. That leading element is usually your natural way of responding, the one that shows up on its own when you are not thinking about how to do things.
The element with the fewest points deserves just as much attention. An empty element does not mean you lack that quality. Often it is ground where you feel clumsy and steer around without noticing. Sometimes it gets overdone to cover the gap, like the chart with almost no fire that turns its owner relentlessly busy. Very often it shows up in the people you choose. Someone with little water in the chart often falls for very emotional people, as if handing them the job of feeling for both.
Elements are half of how the twelve are arranged. Each element holds three signs that are not the same as each other, because each of the three handles its element at a different moment of the same process. That second pattern is called modality and it is the next lesson.