This is a book about the ground floor in human knowledge. It is about intuition in the specific sense of “Anschauung” in Kant’s critical philosophy. Sensory perception of scenes and particulars is a paradigmatic instance thereof. However, intuition in Kant’s technical sense comes with its own taxonomy – or perhaps it is more correct to say that “intuition” is a label for a whole family of representational kinds. It can be sensible or intellectual, empirical or pure, inner or outer, etc. The main focus here shall be on sensory perception, though, or on what Kant calls “outer empirical intuition.”