For the metaphysics of nature abstracts entirely from mathematics, and has nowhere near as many ampliative insights to offer as the latter, yet it is still very important with regard to the critique of the pure cognition of understanding that is to be applied to nature in general; in its absence even mathematicians, depending on certain common but in fact metaphysical concepts, have without noticing it burdened the doctrine of nature with hypotheses that disappear in a critique of these principlesd without doing the least damage to the use of mathematics in this field (which is entirely indispensable).