I call all transcendental ideas, insofar as they concern absolute totality in the synthesis of appearances, world concepts, partly because of the unconditioned totality on which the concept of the world whole also rests even though it is only an idea, and partly because they have to do merely with the synthesis of ap pearances, and hence with the empirical, whereas the absolute totality of the synthesis of the condition of all possible things in general will occasion an ideal pure reason, which wholly distinct from th world con cept, even though it stands in relation to it.