the three quadruplicities or seasons of astrology.

This three-quadruplicities-of-astrology page and the entire website are taken from You and the Universe, a personalized, individually hand bound, fine art book on astrology, mythology and astronomy through which the recipient's complete astrological reading is woven.

The signs are subdivided into four categories, the elements, each of whose members are in harmony with each other, and three seasons or quadruplicities, each of whose members are in discord with each other. That is to say, all signs of the same element are in harmony with each other, and all signs of the same season are in discord with each other. This is further explicated on page 24 of You and the Universe.

Signs in which planets inherently relate with difficulty, friction or obstruction fall into three groups known as the "quadruplicities:" the cardinal, fixed and mutable signs. The cardinal signs begin each season, the fixed signs continue and deepen each season, and the mutable signs end them and distribute their energy. All cardinal signs are in discord with each other; the same is true for all fixed and mutable signs.

Planets in the same quadruplicity that are in aspect to each other (and are not opposed) are said to be square to each other and are 90° give or take 8° (90°± 8°) apart. Squares represent discord and present obstacles to which your trines and sextiles can be applied as tools or virtues. A planet at 15° Gemini, for example, is square to any planet from 7°–23° (15° ± 8°) Pisces, or similarly, to any planet from 7°–23° (15° ± 8°) Virgo. It is likewise opposed (oppositions have a 12° orb) to any planet from 3°–27° (15° ±12°) Sagittarius. The square, opposition, semisquare, sesquiquadrate (135°), semisextile (the 30° aspect) and quincunx (150° aspect) are known as the "hard" aspects. Below are links to pages discussing the three quadruplicities.

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