The complex human eye harvests light. It perceives seven to ten million colors through a synaptic flash: one-tenth of a second from retina to brain. Homo sapiens gangs up to 70 percent of its sense receptors solely for vision, to anticipate danger and recognize reward, but also—more so—for beauty.
Ellen Meloy, The Anthropology of Turquoise: Reflections on Desert, Sea, Stone, and Sky
words