The two orbs, spheres, balls represent all that is. They are symbols/metaphors for the mystery of being and non-being. They are different sizes to represent the duality that is oneness but not sameness. All of which is of no significance (importance) to anyone but me. These two orbs, spheres, balls represent to me all that is, enabling me to have an actual, physical, visible object (The two are one remember) to ground and center me in my relationship/association with reality and my place within reality. They remind me of how things are and also are, orient me in time and space/place, and assist me in taking all of it with no more seriousness than it deserves–enabling me to smile and get back in the business of the Sisyphean task of rolling the stone up hill and following it downhill throughout each day.
The two orbs, spheres, balls are the stone I/we all roll up and down the hill of life and being throughout our life. They are the mystery of existence and non-existence, about which we can say nothing more than we can say about Tao or Psyche. And, in reminding us of that, enable us to take up our task of doing what is called for, asked of us, in each situation as it arises and letting that be that, as Lao Tzu advised all those years ago, going back to the beginning of our awareness/realization/recognition/enlightenment regarding how things are and what we can do about it–which is all we need to do what needs to be done here, now, and enabling our “peaceful abiding,” throughout the time left for living.
Jim Dollar's Photography and Philosophy 