In the solar system the Sun is the centre around which all the other planets revolve, bound by its gravitational force. Similarly, in the birth chart the Sun represents the "centre" of our personality, or the core of our being, around which all the other psychological drives and needs, symbolised by the planets, revolve.

Just as, in the solar system, the Sun is the source of light and life generating energy, so the Sun represents the source of consciousness and life within us all. It is our will to be and our sense of individuality. The birth chart, however, represents the solar system as seen from the earth, not the Sun. Most of us are not centred in our Sun, but in our earthbound, or sense-bound ego. For most of us then, the Sun represents our "Higher Self" or Spirit. It is the immortal spark of the universal spirit which is uniquely ourselves, as opposed to our transient and mortal ego centred personality. The Sun is therefore what we are striving to become.

The sign position of and aspects to the Sun, as seen from the earth, show how this radiant inner self works through the medium of our ego centred personality. It is the fundamental tone of our being, and as such is the most important placement in the chart.