Dividing the zodiac by three

The three modalities describe different forms of expression, as follows  

1 u Cardinal signs are enterprising. They initiate change and make things happen. The cardinal signs are Aries, Cancer, Libra, and Capricorn. 

Within the cycle of the zodiac, the three modalities occur in sequence. Cardinal energy initiates change, fixed energy digs its heels in and maintains the status quo, and mutable energy adapts to shifting circumstances. 

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