It’s now estimated that perception may be up to 90 percent based on memory; barely 10 percent of what we think we’re seeing is the result of stimuli outside the body in the present moment. In order to process huge amounts of visual information, the brain relies on memories of prior experience. Color is not only a wonder of the natural world but something inside us, as Wittgenstein hinted. Following Goethe, whose 1810 Theory of Colours inspired Wittgenstein’s investigation, “If the eye were not sunny, how could we perceive light?” Our memories of experiences, like photographs, may seem to represent the past, but they also shape how we see the present and the future.