http://darwin-online.org.uk/content/frameset?viewtype=text&itemID=A12&keywords=goethe&pageseq=63
By myriad blows (to use a Lucretian phrase) the image and
superscription of the external world are stamped as states of
consciousness upon the organism, the depth of the impression depending
upon the number of the blows. When two or more phenomena occur in the
environment invariably together, they are stamped to the same depth or
to the same relief, and indissolubly connected. And here we come to
the threshold of a great question. Seeing that he could in no way rid
himself of the consciousness of Space and Time, Kant assumed them to
be necessary 'forms of intuition,' the moulds and shapes into which
our intuitions are thrown, belonging to ourselves solely and without
objective existence. With unexpected power and success Mr. Spencer
brings the hereditary experience theory, as he holds it, to bear upon
this question. 'If there exist certain external relations which are
experienced by all organisms at all instants of their waking lives
relations which are absolutely constant and universal there will be
established answering internal relations that are absolutely constant
and universal. Such relations we have in those of Space and Time. As
the substratum of all other relations of the Non-Ego, they must be
responded to by conceptions that are the substrata of all other
relations in the Ego. Being the constant and infinitely repeated
elements of thought, they must become the automatic elements of
thought the elements of thought which it is impossible to get rid of
the "forms of intuition."'