Furthermore,each zodiacal sign has a special relation with a part of the human body. The 12 signs are further divided into four triplicities,each of which governs one of the four elements. Numerous pairs of opposites (male-female,diurnal-nocturnal,hot-cold,and others),based on the speculations of the followers of Pythagoras,a Greek mystical philosopher of the 6th century BC,are connected with consecutive pairs of signs. Finally,a wide variety of substances in the elemental world and attributes of human character are more or less arbitrarily associated with the different signs. These lists of interrelationships provide the rationale for many of the astrologer’s predictions.An individual planet’s influences are related both to its general indications when regarded as ominous in Mesopotamian texts and to the traits of its presiding deity in Greek mythology. But on them are also superimposed the system of the four elements and their four qualities,the Pythagorean oppo...