From the latter phenomena we see once more the significance of Goethe's arrangement of his Farbenlehre. For we are now able to realize that to turn one's attention to the deeds and sufferings of the inner light means nothing less than to bring to consciousness the processes of vision which in childhood, though in a dreamlike way, determine the soul's experience of seeing. Through placing his examination of the physiological colours at the beginning of his Farbenlehre, Goethe actually took the path in scientific research to which Thomas Reid pointed in philosophy. By adapting Reid's words we can say that Goethe, in his Farbenlehre, proclaims as a basic principle of a true Optics: that we must become again as little children if we would reach a philosophy of light and colours.