Symmetry (noun): the quality of something that has two sides or halves that are the same or very close in size, shape and position; the quality of having symmetrical parts.
Those trees are magnificent, aren’t they? Self remembers reading somewhere that the oldest living thing on Earth is a sequoia tree which is in Sequoia National Park. It has survived — OK, self will live for danger — 1,000 years, at least. Self thinks.