On the more spiritual side, the Tree of Life is symbolic of the connection of heaven and the underworld with earth. The deep roots of the tree travel down into the underworld. The vast branches extend up into the upper world. This flow from one realm to another allows communication between humans and the gods.
Yet another symbolic theme of the Tree of Life is rebirth. The leaves change and drop in the fall and winter and regenerate and grow again in the spring and summer.
There is something regal about big old trees. They weather the storm and stand the test of time. I love to sit under the shade of a tree with a good book, listening to the birdsong, being squawked at by squirrels, and hearing the gentle rustling of the leaves in the wind. It’s very tranquil and centering.