Locke, and later Hume, applied a similar pragmatic criticism to the notion of SPIRITUAL SUBSTANCE. I will only mention Locke's treatment of our 'personal identity.' He immediately reduces this notion to its pragmatic value in terms of experience. It means, he says, so much consciousness,' namely the fact that at one moment of life we remember other moments, and feel them all as parts of one and the same personal history. Rationalism had explained this practical continuity in our life by the unity of our soul-substance. But Locke says: suppose that God should take away the consciousness, should WE be any the better for having still the soul-principle? Suppose he annexed the same consciousness to different souls, | should we, as WE realize OURSELVES, be any the worse for that fact? In Locke's day the soul was chiefly a thing to be rewarded or punished. See how Locke, discussing it from this point of view, keeps the question pragmatic: Suppose, he says, one to think himself to be the same soul that once was Nestor or Thersites. Can he think their actions his own any more than the actions of any other man that ever existed? But | let him once find himself CONSCIOUS of any of the actions of Nestor, he then finds himself the same person with Nestor. ... In this personal identity is founded all the right and justice of reward and punishment. It may be reasonable to think, no one shall be made to answer for what he knows nothing of, but shall receive his doom, his consciousness accusing or excusing. Supposing a man punished now for what he had done in another life, whereof he could be made to have no consciousness at all, what difference is there between that punishment and being created miserable? Our personal identity, then, consists, for Locke, solely in pragmatically definable particulars. Whether, apart from these verifiable facts, it also inheres in a spiritual principle, is a merely curious speculation. Locke, compromiser that he was, passively tolerated the belief in a substantial soul behind our consciousness. But his successor Hume, and most empirical psychologists after him, have denied the soul, save as the name for verifiable cohesions in our inner life. They redescend into the stream of experience with it, and cash it into so much small-change value in the way of 'ideas' and their peculiar connexions with each other. As I said of Berkeley's matter, the soul is good or 'true' for just SO MUCH, but no more.