The idea of subjective space is tied to the idea of an experiencing creature around which such a space is organised. For a creature that has a grasp of the concept of subjective space – and a grasp of the concept of subjective space is necessary, as was seen earlier, to the grasp of the concept of objective space – the grasp of that concept must also be tied to the creature's grasp of its own self-identity and more specifically to the creature's grasp of the concept of itself. But what exactly is the relation between the concept of self or of subjectivity that is involved in a creature's grasp of subjective space and the idea of spatiality? One might ask the same question more generally of the relation between ideas of spatiality and the concepts of both subjectivity and objectivity.