Astrologers picture the Sun and the Moon as partners. The unvarying Sun represents your basic essence, vitality, and conscious self, while the inconstant Moon with its many phases (and occasional disappearances) signifies your emotional reactions, instincts, habits, and the unconscious.
Strange but true: To an Earthling gazing at the sky, the Sun and the Moon appear to be the same size. The irrefutable evidence of science states otherwise. But visually, the two are equal.
The Sun (Self-realisation)
The Sun represents your essential self, will, individuality, vitality, and desire for power. More than any other planet, it represents who we are. The Sun's position (Sign, House and aspects of the Sun) in our horoscope, shows us how and in which areas we may develop our true abilities and possibilities. All planets were formed from material cast off from the Sun. Thus, at a basic level, the Sun represents both our physical as well as our spiritual source.
The Sun is our temperament and our self-expression. He symbolises health and vitality. He shows us the will, the courage, the activity, the power of creativity, the desire for power, the self-confidence and ambition we may have. He is the Father. He shows us what kind of occupation we can follow and how we will act as professionals. He is the prestige we seek in society. The Sun represents both our physical as well as our spiritual source. The most natural path towards self-realisation is symbolised by the higher qualities of the Sun-sign, whereby the house position and the aspects of the Sun in the chart may be interpreted as modifying or co- defining factors. It also symbolises men in general. Finally, in feminine horoscopes, the Sun symbolises the husband or the characteristics he could or may have, both on an imaginary and real level.
The Sun rules the sign of Leo.
The Sun in the Houses
The Sun symbolises your will, your purpose, and your most essential self. Its house position describes the area in which you can most effectively express those aspects of your being. You can read more here!
The Moon (Emotion)
Symbol: 
The Moon, which shines by the light of the Sun, is symbolised by the crescent of receptivity.
Astrologically, the Moon can be seen as the “receptor” of the “Sun-energy”, and thus symbolises the rhythms of daily life, which are given vitality by the Sun.
The Moon is our Personality. The Moon represents our emotions, instincts, habits, memory, and subconscious. It is the side of our psyche we don’t expose easily to the world. In male horoscopes, the Moon symbolises the relationship with the female gender in general, what type of women the male attracts or he’s being attracted to, the characteristics his wife should have so she can cover his needs. The Μoon represents how deep are our emotions, their quality, and how easy it is for us to express them. The Moon also shows how calm is a person’s soul, the quality and the sensitivities, plus the fears and his concerns. Finally, the Moon is the relationship we have with the public in general.
It is Perception, that is, the reception of sensory impressions from our environment. It symbolises therefore the foundation of our intelligence: before we can combine and make sense of the impressions we receive (Mercury), they must first be received (Moon).The Moon represents our subconscious, our instincts, and our memory.
It is Feeling, as a product of identification; how we react emotionally. That which we need for our emotional security. By extension the Moon describes the relationship with our mother and family.
The Moon rules the sign of Cancer.
The Moon in the Signs
The sign that the Moon occupied at your birth describes your emotional reactions. It defines an area of fluctuation and instability in your chart, and it also represents women in general and your mother in particular. You can read more here!
The Moon in the Houses
The House that the Moon occupies in your chart determines the area of life in which you react most instinctively. This same area is one in which you may experience all kinds of fluctuations. Yet your emotional well-being depends on the concerns of that house. You can read more here!
