16. Goethe as Thinker and Investigator
From there, he then goes over to the objective processes that bring about the phenomena of colors. And here it is important to bear in mind that Goethe, with these objective processes, is by no means thinking of hypothetical processes of matter or of motion that are no longer perceptible, but rather that he absolutely remains within the perceivable world. His physical colour theory, which constitutes the second part, seeks the conditions that are independent of the eye and are connected to the arising of the colors. But these conditions are still always perceptions. Here, with the help of the prism, of lenses, etc., he investigates how colors arise in connection with light. But for the time being, he does not go beyond tracing colour as such in its development and observing how, in itself, separated from objects, it arises.