The Enigma of ‘not understanding’ can be discomforting, but it is equaling reassuring, in that it proposes, there is still more to know. It’s not what you see but 'what you don’t see' that extends the imagination.’
‘Jackson was deeply moved by what he saw on the ground before him. It was cool standing in the shadow of the tree with its shafts of broken light flecking a large part of the lawn. He was moved to respond, to engage, to contribute somehow, to the profound depth of what he was seeing on the lawn before him.
He gathered together as many white pebbles that he could find and placed them on the spots where the sun shone through. For a sizable area of ground, there were hundreds of these small spots of light and as they were being filled with small handfulls of white pebbles, they took on a presence of their own. The pebbles white smooth surfaces, reflecting the sunlight, stood out in sharp contrast against the texture and moodiness of the darker green grass. Jackson stepped backward, now with just a few pebbles left in his hand, he ceremoniously placed the last of these on the small clusters near him. One here one there, carefully not to dislodge the small mounds. He was mesmerized by the sheer light that was reflected on them and as he stepped back, one step at a time, there emerged, before him, between these clusters of pebbles, the image of a tree. It was a darkly textured tree that emerged out of the shadow on the grass, with its sinewy entangled limbs and leaves, silhouetted against the small mounds of shiny white pebbles that glistened like beacons.'
extract ; 'Health and safety in landscape gardening'