The Golden Spiral! In math, is described in the Fibonacci sequence, 1,1,2,3,5,8, 13, 21, an evolution of scale and complexity, each number the sum of its predecessors. In geometry, is the golden mean, the golden section, the golden ratio... Key to one of history's greatest works of art and architecture. This spiral exists in nature on all levels: The chambers of snail's shell, a cabbage, a tempest, a galaxy... It is our instinctual guide to beauty, composition, and proportion, the visualization of natural order: Simple, primal, and all-encompassing.