Arthur Schopenhauer (1788-1860) published his book, On Vision and the
Colors in 1816. He started from Aristotle's linear color system and Go
ethe's three pairs of contrast colors. His work preceded Hering's theo
ry of opponent colors but his path to insight was blocked by his anti-
Newtonianism and his neo-Hellenistic attitude toward science. Because
of his theory of the subjectivity of colors he was a forerunner of the
psycho-physiological variant of neo-Kantianism.