of a purpose, merely because its possibility can be explained and conceived by us only so far as we assume for its ground a causality according to purposes, i.e. a will which would have so disposed it according to the representation of a certain rule. There can be, then, purposiveness without purpose, so far as we do not place the causes of this form in a will, but yet can only make the explanation of its possibility intelligible to ourselves by deriving it from a will. Again, we are not always forced to regard what we observe (in respect of its possibility) from the point of view of Reason. Thus we can at least observe a purposiveness according to form, without basing it on a purpose (as the material of the nexus finalis), and we can notice it in objects, although only by reflection.