Analysis for the mutual relations between Moon and Mercury

According to Hindu Mythology, the illegal son of Moon is Mercury. According to astrological principles, Mercury is not the enemy of Moon but the reverse is not true i.e. Moon is described as the enemy of Mercury. The Hindu Mythology may be explained as Moon being the father of Mercury bears no enmity for the son out of paternal affection but Mercury bears an enmity or adverse outlook for Moon because of his giving the illegal birth of Mercury. According to astrological principles, Moon signifies the upper layer of mind related with wild emotions whereas Mercury signifies common-sense, child like simplicity and inquisitiveness, rationality, analytical power etc. For any successful and honest effort in life, emotion is extremely necessary but it must be balanced by material rationality; otherwise unbalanced blind emotion is very likely to result in destruction. Therefore, it is clear that emotion must be balanced with rationality derived from Sattwik sense

In the Zodiac, Moon rules over the sign Cancer, the cardinal watery sign of Tamas nature. And of the two signs ruled by Mercury, the third sign of the Zodiac is Gemini, dual airy sign of Sattwik nature while the sixth sign Virgo is dual earthy sign of Sattwik nature. Water and Earth are quite in harmony from the elemental point of view but this is not so for Water and Air. As such, the relation between the signs Cancer and Virgo is third/eleventh i.e. mutually helping but the same between Cancer and Gemini is second/twelfth i.e. is an unfavorable one. In explanation, it may be said that emotion and material rationality are mutually helpful for their expression but the same is not true, rather damaging for each other in the relation between childish inquisitiveness and emotion, because in that case if the childish queries be overshadowed by emotion, it may invite troubles for the native and also for the environment.

In Astrological classification of planets, strong Moon is creative while weak Moon and Mercury are destructive. Therefore, excessiveness of emotion due to strong Moon is damaging for the rationality of Mercury belonging to destructive group but when emotion is diminished due to the influence of weak Moon, it is controllable by intelligence and rationality of Mercury. In other words, weak Moon and Mercury belonging to the same destructive group become mutually helpful for each other.