Of all archetypal symbols making a powerful impact on the human spirit, probably none remains more deeply ingrained in our subconscious realms than the circle or the wheel. The circle is an emblematic sign of the continuity of existence. It is a sign of the Lunar/Solar principles and it is a symbol of infinity because it has no beginning and no end.
As a representation of the Sun it is at its most potent during the Midsummer Solstice, a time when the solar orb is at its highest point in the Heavens. Now all natural growth is at the zenith of its potential.
The wheel of the year from this day on can only roll downhill towards autumn and the bleak death of midwinter. Whether we like it or not we are all an essential part of the organic universal plan of things. We do however possess free will and the ability to delay or enhance our destinies according to our own reckless or wise actions. The ancients knew this fact well, and yet they also realised that without fair chance or good luck, life could be poor, intolerable or ultimately fatal.