Nowadays people often favour working with the complexity and variety of nature, rather than the simplicity of the abstract, but in our work we need both.

Mind strives for simplicity. It transforms our complex experience into simpler but perhaps less tangible mental images, thoughts and feelings.

At its deeper levels, beyond the rational and verbal levels, mind works with symbols and archetypes. Rich with meaning and significance, these archetypes are in some sense the pillars of mind, the building blocks of meaning.

Beyond even this, the mind works with the pure abstract – with number and pattern.

One way of working with the abstract is what we now call sacred geometry. Some of the oldest examples of this activity are the 5000-year-old stone balls found in Scotland.

Hundreds of carved stone spheres, roughly three inches in diameter have been found over the years in Scotland. Many form regular polyhedra, and some depict platonic solids, long before the Greeks wrote about them. As to the purpose of the stone balls – no one knows. Perhaps they were used as weights, as dice for oracles, in ball games, or just as ‘prestige objects’. Or maybe the Neolithic people used them as objects of contemplation.

I have a replica of the Towie stone. It has four large knobs on it, each decorated with a different pattern. It forms a tetradedron – a triangular-based pyramid.

All of the stone balls are of a size to fit comfortably in the hands. I sit in the dark with the replica, feeling the shape with my fingertips. After a while it warms from my body heat. I sense the fine patterns of decoration. There is nothing to say about it, except that something in me responds to its shape. I wonder if our ancestors made a similar use of the stone.