 Finally, transcendental idealism, in so far as it concerns space and time, has the following essential component: we have a non-empirical, singular, immediate representation of space. Part of Kant’s innovation is to introduce into the philosophical lexicon the very idea that we can have non-empirical intuition. It is improbable that we can interpret this idea correctly unless we remind ourselves that Kant rigorously distinguishes between sensation and intuition. That distinction, in turn, forms a crucial component in Kant’s extensive rejection of the Leibnizian doctrine of perception. It is only with the rejection of that doctrine that we can understand Kant’s break with the Leibnizian view of space and time in the right light.