A circle represents so much more than one would care to venture. Look around, and observe...it's everywhere. A circle gives a sense of totality, completeness, and universalism. It has no beginning, nor an ending, like eternity. Everything is equal and uniform. It represents true perfection, timelessness, life force, and much more.
How does a clock move? What about yin and yang? How about the Yuga wheels and zodiacs? These are the more commonly observable parameters. There's much more about this magical shape (and extensions of it, like a sphere). We can go on discussing about how it means almost everything in the universe, in divinity, spirituality, and in cosmic references. However, let's hold on to it for now.
The next thing to brood over is how do we define a circle, or a more interesting question, what defines a circle? Of course, we all know the definition of circle from school... but what defines it!? Though it's obvious, and we have studied it, many of us choose not to be bothered by it. Well, that is a "bliss"ful situation. (Congratulations, if you understood the reference.)
The beauty of the answer lies in its elegance. Think about it. We perceive a circle to be a circle by the entity that demarcates it in space. Its circumference. We define a circle as an equidistant set of points (Let us call these equidistant points as the exterior points) from a center point. We call that distance, from the center to the exterior points, as the radius. If we consider the journey from one exterior point to another exterior point, through the center, that makes twice the radius. I agree, it might seem, I am stating the obvious. But, one should thrive in exploring the obvious. It just gives much more meaning to our beings, our existence.
Our journey of self-exploration, from one aspect of us to another, by understanding our innermost strengths or our center/core (our spiritual existence) seems symbolically equivalent with twice-the-radius. And what demarcates us, or what gives us a sense of physical existence is similar, in some sense, to circumference.
If we divide the circumference by twice-the-radius (no matter what circle we are choosing, big or small), what do we get? Pi. Yes, its that simple, and that simplicity is beautiful and perfect in every sense of the word. Pi defines a circle. What defines us? After having defined the two basic components of our being, our physical existence and our journey to understand the spiritual existence, it is quite perceptible. That makes pi so much more magical, for me at least.
How do we traverse a circle? Using pi, of course. Once around the circle of unity is a complete rotation (2*pi). So, that justifies the saying "life has come a full circle". If we relate the circle of unity as one aspect of our multidimensional life, and if we could explore it in a complete sense, in a wholesome enriching way, we could say that we achieved a complete rotation. (I would prefer not to dilute it further by explaining something which would be so much more beautiful by experiencing and understanding by perception.) In every true sense then, life indeed has come a full circle.
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P.S. Even the very symbol of pi is interesting. Did you know the idea of the symbol is based on the meandering ratio of rivers?
