is not confined to the narrow field of the eye. Just as the nerve
processes arising in the retina are continued to the optic centre in
the cerebrum, so must we look for the origin of the corresponding blood
process not in the choroid itself, but in the lower regions of the
organism. Wherever, therefore, the colour red influences the whole
nerve system, the blood system as a whole answers with an activity of
the metabolism corresponding to the contrasting colour, green.
Similarly it reacts as a whole to a blue-violet affecting the nerve
system, this time with a production corresponding to yellow-orange.

The reason why in later years we notice this so little lies in a fact
we have repeatedly encountered. The consciousness of the grown man
to-day, through its one-sided attachment to the death-processes in the
nerve region, pays no attention to its connexion with the
life-processes centred in the blood system. In this respect the
condition of the little child is quite different. Just as the child is
more asleep in its nerve system than the grown-up person, it is more
awake in its blood system. Hence in all sense-perceptions a child is
not so much aware of how the world works on its nerve system as how its
blood system responds. And so a child in a red environment feels
quietened because it experiences, though dimly, how its whole blood
system is stimulated to the green production; bluish colours enliven it
because it feels its blood answer with a production of light yellowish
tones.

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