this Critique itself does not assume the title of transcendental
philosophy, it is only because, to be a complete system, it ought to
contain a full analysis of all human knowledge a priori. Our
critique must, indeed, lay before us a complete enumeration of all
the radical conceptions which constitute the said pure knowledge. But
from the complete analysis of these conceptions themselves, as also
from a complete investigation of those derived from them, it abstains
with reason; partly because it would be deviating from the end in view
to occupy itself with this analysis, since this process is not
attended with the difficulty and insecurity to be found in the
synthesis, to which our critique is entirely devoted, and partly
because it would be inconsistent with the unity of our plan to
burden this essay with the vindication of the completeness of such
an analysis and deduction, with which, after all, we have at present
nothing to do. This completeness of the analysis of these radical
conceptions, as well as of the deduction from the conceptions a priori
which may be given by the analysis, we can, however, easily attain,
provided only that we are in possession of all these radical
conceptions, which are to serve as principles of the synthesis, and
that in respect of this main purpose nothing is wanting.

To the Critique of Pure Reason, therefore, belongs all that
constitutes transcendental philosophy; and it is the complete idea
of transcendental philosophy, but still not the science itself;
because it only proceeds so far with the analysis as is necessary to
the power of judging completely of our synthetical knowledge a priori.

The principal thing we must attend to, in the division of the
parts of a science like this, is that no conceptions must enter it
which contain aught empirical; in other words, that the knowledge a