The planet Mercury has much in common with its opponent, Jupiter, who sits as ruler of its own signs on the other side of the Thema Mundi chart. Together Jupiter and Mercury rule the four mutable signs: Jupiter rules mutable fire and mutable water and Mercury rules mutable earth and mutable air. The four signs are called bicorporeal because they are the combination of two separate images. Jupiter’s Pisces are two fish swimming away from each other but bound by…..