  Reid refuses to speculate on the substance of the enduring self, however. Despite the fact that Reid is a substance dualist who believes that selves are eternal souls, he does not defend that view in the work that he published. In manuscript lectures he describes souls as “beings of a quite different Nature” than material bodies and says that the death of the body does not imply the death of the soul (Animate Creation 617–618). As Reid spells out his metaphysics of the self and soul here, his arguments become theological and appeal to God's existence, love and justice. He offers a moral argument about the necessity of reward and punishment for the thesis that the self survives bodily death (Animate Creation 623). Though survival of the self after bodily death is “of the highest Importance to Mankind yet it must be acknowledged that [all] the Arguments that Philosophy suggests upon this head are not of such Strength but that they may leave some doubt even in the Minds of wise and thinking Men” (Animate Creation 629).