The Twins. The third sign of the zodiac. Its symbol represents two pieces of wood bound together, symbolical of the unremitting conflict of contradictory mental processes. The Sun is in Gemini annually from May 21 to June 20. Astrologically it is the thirty degree arc immediately preceding the Summer Solstice, marked by the passing of the Sun over the Tropic of Cancer, and occupying a position along the ecliptic from 60° to 90°. It is the Mutable quality of the element: positive, dual.
Ruler: Mercury. Detriment: Jupiter.
Worrisome Gemini.
...Who's fond of life and jest and pleasure;
...Who vacillates and changes ever?
...Who loves attention without measure?
...Why? Gemini.
Symbolic interpretation: Castor and Pollux; Bohas and Jakin, of Solomon's Temple; the Pillars of Hercules.
Gemini establishes a relationship between the Self and substance, the linkage of rhythm and form.
Fair Leda's twins, in time to stars decreed,
One fought on foot, one curbed the fiery steed. - Virgil
First Decan: Mastership, activities on the mental plane, deduction after assimilation.
Second Decan: Fidelity, the espousal of progressive causes.
Third Decan: Reason, the power of the objective mind.
