According to Greek myth, Mercury (or Hermes, whose name derives etymologically from the piles of rocks which marked trails and guided travelers) was the messenger of the gods. He carried orders from Olympus to the mortals on Earth. The child of the illegitimate union of Zeus with Maia, Mercury was born “unknown to the immortal gods” and had to win his place among them by trickery, cleverness, and cunning. This is why he became the vagabond deity of travelers and wanderers. He is the instinctive foe of the settled who see him as an outcast roaming on the outskirts of society: a pariah, a thief, and a swindler. As ruler of the sign of Gemini, the Twins, he symbolizes the brother—the alter-ego who teaches us as much as we teach him and is associated with adolescence, a period of intense intellectual discovery. Mercury thus symbolizes lively, sparkling wit, mobility in any form, mental exchange, and interaction. As a result, a person strongly ruled by Mercury is quite likely to be clever and skillful. If Mercury is “afflicted” in one’s chart, their intellectual velocity may sometimes become mere mental hyperactivity. In any case, these skills are a great resource in the social realm.

As one of the planets historically thought to be on the outer limits of the solar system (until the “modern” planets were discovered), Saturn has always been associated with the moon, itself a peripheral heavenly body because it belongs to Earth and not to the solar system. It is Saturn’s influence which can result in a problem of identity and difficulties in aging which will make themselves evident in personal crises at every passage of this planet, every seven years–thus at the age of 7, 14, or 21. Depending on the psychological context in which you are developing, you may overcome or overcompensate your identity complex and gradually acquire a strongly structured personality, or, conversely, remain in a state of immaturity which would probably be detrimental to your destiny.

BadBoyHalo:

As the second light of the solar system, the moon has always been associated with the sun in the minds of men. The moon and sun are the primordial cosmic couple. This satellite of the earth, which mysteriously waxes and wanes, has been compared to the eternal feminine principle, the mother hovering over your infant’s cradle. Psychologically, the moon is thus symbolic of the mother and the mother image. This figure is a primordial element in the psyche of each individual. Depending on your nature, the mother figure may correspond to your biological mother, a grandmother, or a woman who cared for you in infancy and childhood. When you reach adulthood, this mother-figure and all the emotions and bonds associated with you may be transferred to something else: a spouse, a companion, an institution, a church, corporation, or political movement, a cult, etc. In short, any individual or structure likely to take on the mother’s duty of caring for and nurturing the vulnerable aspects of an individual. To be more down-to-earth, the mother figure corresponds to the habits which were learned and then definitively incorporated into the individual’s identity as you gradually became acculturated and progressed toward social independence. As a result, a strongly “lunar” personality often finds it difficult to adapt and is uncomfortable outside the secure setting of familiar routines. Closely tied to your past, you may be unwilling to detach yourself from it and embark on your life as an individual in the here and now. You still identify somewhat with your inner child and may display a child’s capricious behavior, indulging in moodiness and indecision. Your passivity may make you easily influenced, your sensitivity makes you subjective, and you hesitate to open up and lay your soul bare. In your daily life, psychic activity will rule. Your imagination, memory, sensitivity, sensation, and sentiment nearly overwhelm your psyche.

The tenth house is an area of the sky which is especially important in your theme. In the following paragraph, we shall explain the general meaning of this fact.