We are now in a position to raise the metaphysical question which has been gradually shaping itself through these studies of phenomenological psychology. We may formulate it as follows: what are the characteristics that can be attributed to consciousness from the fact that it is a consciousness capable of imagining. This question can be taken in the sense of a critical analysis under the form: of what nature must a consciousness be in general if the construction of an image should always be possible? And no doubt it is in this form that our minds, accustomed to raising philosophical questions in the Kantian perspective, will best understand it. But, as a matter of fact, the problem in its deepest meaning can only be grasped from a phenomenological point of view.