Alexander presents a metaphysical argument for the unity of space and time, arguing they are merely distinguishable aspects of Motion. He argues that space and time must be unified because, when abstracted away from each other, it becomes clear that they could not exist independently. Time would become a mere “now”, incapable of succession; and space would become a mere “blank”, without distinguishable elements (Alexander 1920i: 47). Motion is both successive and boasts distinguishable elements