卷一·第五章　论吉星与凶星

Since the foregoing is the case, because two of the four humours are fertile and active, the hot and the moist (for all things are brought together and increased by them), and two are destructive and passive, the dry and the cold, through which all things, again, are separated and destroyed, the ancients accepted two of the planets, Jupiter and Venus, together with the moon, as beneficent because of their tempered nature and because they abound in the hot and the moist, and Saturn and Mars as producing effects of the opposite nature, one because of his excessive cold and the other for his excessive dryness; the sun and Mercury, however, they thought to have both powers, because they have a common nature, and to join their influences with those of the other planets, with whichever of them they are associated.

既然前面所说如此，由于四种体液之中，有两种是能生养、主动的，即热与湿（因为万物都由它们聚合、增长），另两种是毁坏、被动的，即燥与冷（万物又都由它们离散、毁灭），古人便把两颗行星，木星与金星，连同月亮，认作吉星，因为它们本性调和，又富于热与湿；而把土星与火星认作产生相反性质之作用的星，一个是因为过冷，一个是因为过燥；至于太阳与水星，他们认为兼有两种力，因为它们本性共通，并且会与其他行星的影响相结合，与哪一颗相伴，就同哪一颗结合。