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CHAPTER YI.
ON THE THIRD CLASS OF OBJECTS FOB THE SUBJECT AND
THAT FORM OF THE PRINCIPLE OF SUFFICIENT REASON
WHICH PREDOMINATES IN IT.
35. Explanation of this Class of Objects.
IT is the formal part of complete representations that
is to say, the intuitions given us a priori of the forms
of the outer and inner sense, i.e. of Space and of Time
which constitutes the Third Class of Objects for our repre
sentative faculty.
As pure intuitions, these forms are objects for the
faculty of representation by themselves and apart from
complete representations and from the determinations of
being empty or filled which these representations first add to
them ; since even pure points and pure lines cannot be
brought to sensuous perception, but are only a priori in
tuitions, just as the infinite expansion and the infinite
divisibility of Space and of Time are exclusively objects of
pure intuition and foreign to empirical perception. That
which distinguishes the third class of representations, in
which Space and Time are pure intuitions, from the first
class, in which they are sensuously (and moreover con
jointly) perceived, is Matter, which I have therefore de
fined, on the one hand, as the perceptibility of Space and
Time, on the other, as objectified Causality.
The form of Causality, on the contrary, which belongs
to the Understanding, is not separately and by itself