 In these first two arguments, Kant considers, perhaps among other things, the origin of our representation of space, concluding that it is not empirical. It seems, though, that these first two arguments leave open the question of the content of our representation of space in two important senses. First, Kant’s first two arguments do not explicate what properties we represent space as having. Do we represent it, for instance, as finite or infinite, as homogeneous or not? And so on. Second, the first two arguments in the Transcendental Aesthetic apparently leave it open that the content of our representation of space could be conceptual. That is, they leave it open that our representation of space could be a concept, rather than an intuition—it could be either a general, mediate representation, or a singular, immediate one. We simply know—if Kant’s arguments are successful—that the representation is not empirical. And Kant certainly thinks that a non-empirical representation could be either a concept or an intuition; that is, he thinks that we have both a priori concepts and pure intuition. Since the idea of pure intuition is puzzling in a way that the idea of an a priori concept may not be, one interpretive goal is to clarify this idea in the course of understanding the second two arguments of the Metaphysical Exposition.