Goethe Theory of Colours

Knowing is not enough; we must apply. Willing is not enough; we must do. Johann Wolfgang von Goethe
Goethe is considered by many to be the most important writer in the German language and one of the most important thinkers in Western culture as well. Early in his career, however, he wondered whether painting might not be his true vocation; late in his life, he expressed the expectation that he would ultimately be remembered above all for his work on colour.
Scanned copy of English translation as a Google book