As Robin Wall Kimmerer beautifully says in Braiding Sweetgrass: Indigenous Wisdom, Scientific Knowledge, and the Teachings of Plants, "Trees constitute the environmental quality committee – running air and water purification service 24 – 7. They are on every task force, from the historical society picnic to the highway department, school board, and library. When it comes to civic beautification, they alone create the crimson fall with little recognition… These processes are what ecological scientists term ecosystem services, the structures and functions of the national world that make life possible.… And yet these services go unaccounted for in the human economy.… We get them for free, donated continually by maples."
If you like, take a moment and observe a tree. You might look deeply at it, as if getting ready to draw it. Noticing the shapes of the leaves and their colors, how different parts of the leaf give way to a range of colors. Noticing the network of lines.
The pattern of lines in tree leaves make fractals, amazing geometric patterns and shapes in which each part is similar to the whole and similar patterns repeat at progressively smaller scales.
Do these network of lines remind you of anything? They might call to mind the patterns in lungs, blood vessels, or other parts of the body.
Coming back to the tree, gently.
If you are close enough, you might touch a leaf, whether it is on the ground or still connected to a living tree. Feeling the texture.
Conspiring, breathing with, the tree.