Castor and Pollux

The symbol for Gemini is a pair of twin boys.

The model for Gemini is the twin sons of the Spartan queen, Leda - Pollux and Castor. The two, despite being twins, have different fathers, with a peculiar back-story. Zeus was in love with the beautiful queen Leda, so he transformed into a swan to seduce her. They made love, making Leda pregnant with Zeus’ son. However, she also slept with her husband the same night, leading to her being pregnant with another son. Thus, Pollux was born an immortal demigod with the blood of Zeus, while Castor was born a mere human. Despite this, the two had exceptional brotherly love for each other and would do everything together. 

Pollux possessed great physical strength, while Castor possessed great ingenuity. But one day, Castor died from a fight,causing great despair for Pollux. No matter how hard he tried, he could not kill himself due to his immortality. He cried out to Zeus: “If I cannot be with my brother, then I do not want to be immortal". Zeus, taking pity on the two and admiring their love for each other, offered to halve Pollux’s immortality and share it with Castor. This is how they became a bright constellation in the night sky, side-by-side.

Gemini is a dual sign and needs focus in order to resolve the apparent dual natures of their being, as illustrated in the myth of Castor and Pollux. It is only apparent: this is not like the situation with Pisces where the two fish are bound together and swimming in different directions. Although one is an equestrian and the other a pugilist, the Gemini twins are inseparable and move as one.