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Having made ourselves so far acquainted with the fundamentals of Goethe’s approach to the outer phenomena of colour involved in the spectrum, we will leave this for a while to follow Goethe along another no less essential line of inquiry. It leads us to the study of our own process of sight, by means of which we grow aware of the optical facts in outer space.

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The importance which Goethe himself saw in this aspect of the optical problem is shown by the place he gave it in the didactic part of his Farbenlehre. The first three chapters, after the Introduction, are called ‘Physiological Colours’, ‘Physical Colours’, and ‘Chemical Colours’. In the first chapter, Goethe summarizes a group of phenomena which science calls ‘subjective’ colours, since their origin is traced to events within the organ of sight. The next chapter deals with an actual physics of colour – that is, with the appearance of colours in external space as a result of the refraction, diffraction and polarization of light. The third chapter treats of material colours in relation to chemical and other influences. After two chapters which need not concern us here comes the sixth and last chapter, entitled ‘Physical-Moral Effect of Colour’ (‘Sinnlich-sittliche Wirkung der Farben’), which crowns the whole. There, for the first time in the history of modern science, a bridge is built between Physics, Aesthetics and Ethics. We remember it was with this aim in view that Goethe had embarked upon his search for the solution of the problem of colour.

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In this chapter the experiencing of the various colours and their interplay through the human soul is treated in many aspects, and Goethe is able to show that what arises in man’s consciousness as qualitative colour-experience is nothing but a direct ‘becoming-inward’ of what is manifested to the ‘reader’s’ eye and mind as the objective nature of colours. So, in one realm of the sense-world, Goethe succeeded in closing the abyss which divides existence and consciousness, so long as the latter is restricted to a mere onlooker-relationship towards the sense-world.

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If we ask what induced Goethe to treat the physiological colours before the physical colours, thus deviating so radically from the order customary in science, we shall find the answer in a passage from the Introduction to his Entwurf. Goethe, in giving his views on the connexion between light and the eye, says: ‘The eye owes its existence to light. Out of indifferent auxiliary animal organs the light calls forth an organ for itself, similar to its own nature; thus the eye is formed by the light, for the light, so that the inner light can meet the outer.’ In a verse, which reproduces in poetic form a thought originally expressed by Plotinus, Goethe sums up his idea of the creative connexion between eye and light as follows:

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‘ Unless our eyes had something of the sun, How could we ever look upon the light? Unless there lived within us God’s own might, How could the Godlike give us ecstasy?¹

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(Trans. Stawell-Dickinson)

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By expressing himself in this way in the Introduction to his Farbenlehre, Goethe makes it clear from the outset that when he speaks of ‘light’ as the source of colour-phenomena, he has in mind an idea of light very different from that held by modern physics. For in dealing with optics, physical science turns at once to phenomena of light found outside man – in fact to phenomena in that physical realm from which, as the lowest of the kingdoms of nature, the observations of natural science are bound to start. Along this path one is driven, as we have seen, to conceive of light as a mere ‘disturbance’ in the universe, a kind of irregular chaos.

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In contrast to this, Goethe sees that to gain an explanation of natural physical phenomena which will be in accord with nature, we must approach them on the path by which nature brings them into being. In the field of light this path is one which leads from light as creative agent to light as mere phenomenon. The highest form of manifestation of creative light most directly resembling its Idea is within man. It is there that light creates for itself the organ through which, as manifest light, it eventually enters into human consciousness. To Goethe it was therefore clear that a theory of light, which is to proceed in accord with nature, should begin with a study of the eye: its properties, its ways of acting when it brings us information of its deeds and sufferings in external nature.

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The observation of our own visual process, which we began in the last chapter, will serve now to free us from a series of illusory concepts which have been connected by the onlooker-consciousness with the phenomena brought about by light.