On Vision and Colors tried to demonstrate physiologically that color is "specially modified activity of the retina." The initial basis for Schopenhauer's color theory comes from Goethe's chapter on physiological colors, which discusses three principal pairs of contrasting colors: red/green, orange/blue, and yellow/violet. This is in contrast to the customary emphasis on Newton's seven colors of the Newtonian spectrum. In accordance with Aristotle, Schopenhauer considered that colors arise by the mixture of shadowy, cloudy darkness with light. With white and black at each extreme of the scale, colors are arranged in a series according to the mathematical ratio between the proportions of light and
Separated at birth physical similarities to humorous effect. There were several "Separated at Birth?" books issued around the same time, with whimsical comparisons such as Mick Jagger vs. Don Knotts as the fictional film character "The Incredible Mr. Limpet". Separated at birth Separated at birth, usually phrased as a question, is a light-hearted media device for pointing out people who are unrelated but bear a notable facial resemblance, implying that they are twins who were separated soon after being born and presumably adopted by separate families. The title "Separated at Birth?" was a trademark of Spy Publishing Partners, the publishers of the now