« By the river, there is a tree we watched day after day during several weeks at sunrise... early evening, when the setting sun illuminates the west, the tree progressively darkens, closes down on himself. Sky is red, yellow, green, but the tree remains silent, hiding as it rests for the night. 

If you establish a relation with it, you are in relation with the whole humanity. You become responsible of this tree and of all the trees of the world. If you are in no relation with the living beings of the world, there is a risk that you loose your relation with humanity, with human beings. »