Earth signs also can be visualized. They are grounded, firm, steady, dependable, show where you have the ability to get things done, and are sometimes stubborn. The third element is Air . Air signs are free-flowing, intellectual, humanitarian, and social. The fourth element is Water .
Water signs are intense, deep, emotional, and intuitive.
The signs are further described with Qualities . There are three qualities, and each contain a quadriplicity of four signs. The qualities are Cardinal, Fixed, and Mutable . Cardinal brings a quality of initiative to the sign. Cardinal signs are great at starting things up, though they lack follow-through.