In the material world we can find patterns that point to the spiritual. One of those patterns is the Hollow. We find it naturally occurring in plant stems such as bamboo, in bones, in lungs, the cavity of the mouth, cave formations, and at the heart of wind formations such as hurricanes and tornadoes. Humankind also uses the hollow in wind instruments, where the flow of air through a hollow tube with hollow outlets creates sounds of different frequencies. Pipework, containers, bottles and cups, even trains, ships and planes have a hollowness about them. The well-known sacred sound, Om or Aum, refers to the Hollow.

What is the spiritual significance of the Hollow? It hints at the empty space at the heart of the universe, the heart of our being. Buddhists call it emptiness or void. Eckhart Tolle calls it Spaciousness. It is the Sacred Spaciousness at the heart of our being. Our nature is not the apparent outer hardness of the human form. We are the Sacred Spaciousness that perceives the apparent outer form.

Within the Sacred Spaciousness there is no inside our outside. The heart of our being is a complete Singularity. The apparently outside world appears through the use of opposites. So the hollow is expressed as an empty circle, an empty interior with a circular boundary. Without the use of the opposites the Spaciousness cannot be expressed or perceived. You see, the hollow that we can say is the heart of our being has no limits, no boundaries. It is an Infinite One. When considered from the outside material viewpoint we can say it is at the heart of our being. But in the heart there is no inside or outside.

It is the Singularity that seems to be the heart of the world, yet it is not limited by the world. It is not devoid of life. It is pure, complete life, by which the opposites of life and death are known. Ultimately it is within the Singularity that this interplay of opposites, of inside and outside, alive and not alive, stillness and motion, plays out.

All sentient beings have this same centre. There is only one Infinite Singularity. It is the heart of the world of many, the heart of the world of opposites. We are not the play of opposites. We are the Sacred Spaciousness.